74214745178112
74,214,745,178,112 is an even composite number composed of five prime numbers multiplied together.
74214745178112 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two thousand, two hundred sixty-eight divisors.
Prime factorization of 74214745178112:
217 × 36 × 72 × 112 × 131
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 7 × 7 × 11 × 11 × 131)See below for interesting mathematical facts about the number 74214745178112 from the Numbermatics database.
Names of 74214745178112
- Cardinal: 74214745178112 can be written as Seventy-four trillion, two hundred fourteen billion, seven hundred forty-five million, one hundred seventy-eight thousand, one hundred twelve.
Scientific notation
- Scientific notation: 7.4214745178112 × 1013
Factors of 74214745178112
Divisors of 74214745178112
- Number of divisors d(n): 2268
-
Complete list of divisors:
1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 27 28 32 33 36 42 44 48 49 54 56 63 64 66 72 77 81 84 88 96 98 99 108 112 121 126 128 131 132 144 147 154 162 168 176 189 192 196 198 216 224 231 242 243 252 256 262 264 288 294 297 308 324 336 352 363 378 384 392 393 396 432 441 448 462 484 486 504 512 524 528 539 567 576 588 594 616 648 672 693 704 726 729 756 768 784 786 792 847 864 882 891 896 917 924 968 972 1008 1024 1048 1056 1078 1089 1134 1152 1176 1179 1188 1232 1296 1323 1344 1386 1408 1441 1452 1458 1512 1536 1568 1572 1584 1617 1694 1701 1728 1764 1782 1792 1834 1848 1936 1944 2016 2048 2079 2096 2112 2156 2178 2268 2304 2352 2358 2376 2464 2541 2592 2646 2673 2688 2751 2772 2816 2882 2904 2916 3024 3072 3136 3144 3168 3234 3267 3388 3402 3456 3528 3537 3564 3584 3668 3696 3872 3888 3969 4032 4096 4158 4192 4224 4312 4323 4356 4536 4608 4704 4716 4752 4851 4928 5082 5103 5184 5292 5346 5376 5502 5544 5632 5764 5808 5832 5929 6048 6144 6237 6272 6288 6336 6419 6468 6534 6776 6804 6912 7056 7074 7128 7168 7336 7392 7623 7744 7776 7938 8019 8064 8192 8253 8316 8384 8448 8624 8646 8712 9072 9216 9408 9432 9504 9702 9801 9856 10087 10164 10206 10368 10584 10611 10692 10752 11004 11088 11264 11528 11616 11664 11858 11907 12096 12288 12474 12544 12576 12672 12838 12936 12969 13068 13552 13608 13824 14112 14148 14256 14336 14553 14672 14784 15246 15488 15552 15851 15876 16038 16128 16384 16506 16632 16768 16896 17248 17292 17424 17787 18144 18432 18711 18816 18864 19008 19257 19404 19602 19712 20174 20328 20412 20736 21168 21222 21384 21504 22008 22176 22528 22869 23056 23232 23328 23716 23814 24192 24576 24759 24948 25088 25152 25344 25676 25872 25938 26136 27104 27216 27648 28224 28296 28512 28672 29106 29344 29403 29568 30261 30492 30976 31104 31702 31752 31833 32076 32256 32768 33012 33264 33536 33792 34496 34584 34848 35574 35721 36288 36864 37422 37632 37728 38016 38514 38808 38907 39204 39424 40348 40656 40824 41472 42336 42444 42768 43008 43659 44016 44352 45056 45738 46112 46464 46656 47432 47553 47628 48384 49152 49518 49896 50176 50304 50688 51352 51744 51876 52272 53361 54208 54432 55296 56133 56448 56592 57024 57344 57771 58212 58688 58806 59136 60522 60984 61952 62208 63404 63504 63666 64152 64512 65536 66024 66528 67072 67584 68607 68992 69168 69696 70609 71148 71442 72576 73728 74277 74844 75264 75456 76032 77028 77616 77814 78408 78848 80696 81312 81648 82944 84672 84888 85536 86016 87318 88032 88209 88704 90112 90783 91476 92224 92928 93312 94864 95106 95256 95499 96768 98304 99036 99792 100352 100608 101376 102704 103488 103752 104544 106722 108416 108864 110592 110957 112266 112896 113184 114048 114688 115542 116424 116721 117376 117612 118272 121044 121968 123904 124416 126808 127008 127332 128304 129024 130977 131072 132048 133056 134144 135168 137214 137984 138336 139392 141218 142296 142659 142884 145152 147456 148554 149688 150528 150912 152064 154056 155232 155628 156816 157696 160083 161392 162624 163296 165888 169344 169776 171072 172032 173313 174636 176064 176418 177408 180224 181566 182952 184448 185856 186624 189728 190212 190512 190998 193536 196608 198072 199584 200704 201216 202752 205408 205821 206976 207504 209088 211827 213444 216832 217728 221184 221914 222831 224532 225792 226368 228096 229376 231084 232848 233442 234752 235224 236544 242088 243936 247808 248832 253616 254016 254664 256608 258048 261954 264096 266112 268288 270336 272349 274428 275968 276672 278784 282436 284592 285318 285768 290304 294912 297108 299376 301056 301824 304128 308112 310464 311256 313632 315392 320166 322784 325248 326592 331776 332871 338688 339552 342144 344064 346626 349272 350163 352128 352836 354816 360448 363132 365904 368896 371712 373248 379456 380424 381024 381996 387072 392931 393216 396144 399168 401408 402432 405504 410816 411642 413952 415008 418176 423654 426888 427977 433664 435456 442368 443828 445662 449064 451584 452736 456192 458752 462168 465696 466884 469504 470448 473088 480249 484176 487872 495616 497664 507232 508032 509328 513216 516096 519939 523908 528192 532224 536576 540672 544698 548856 551936 553344 557568 564872 569184 570636 571536 580608 589824 594216 598752 602112 603648 608256 616224 617463 620928 622512 627264 630784 635481 640332 645568 650496 653184 663552 665742 668493 677376 679104 684288 688128 693252 698544 700326 704256 705672 709632 720896 726264 731808 737792 743424 746496 758912 760848 762048 763992 774144 776699 785862 792288 798336 802816 804864 811008 817047 821632 823284 827904 830016 836352 847308 853776 855954 867328 870912 884736 887656 891324 898128 903168 905472 912384 917504 924336 931392 933768 939008 940896 946176 960498 968352 975744 991232 995328 998613 1014464 1016064 1018656 1026432 1032192 1039878 1047816 1050489 1056384 1064448 1073152 1081344 1089396 1097712 1103872 1106688 1115136 1129744 1138368 1141272 1143072 1161216 1179648 1188432 1197504 1204224 1207296 1216512 1232448 1234926 1241856 1245024 1254528 1261568 1270962 1280664 1283931 1291136 1300992 1306368 1327104 1331484 1336986 1354752 1358208 1368576 1376256 1386504 1397088 1400652 1408512 1411344 1419264 1440747 1441792 1452528 1463616 1475584 1486848 1492992 1517824 1521696 1524096 1527984 1548288 1553398 1559817 1571724 1584576 1596672 1605632 1609728 1622016 1634094 1643264 1646568 1655808 1660032 1672704 1694616 1707552 1711908 1734656 1741824 1769472 1775312 1782648 1796256 1806336 1810944 1824768 1848672 1862784 1867536 1878016 1881792 1892352 1906443 1920996 1936704 1951488 1982464 1990656 1997226 2028928 2032128 2037312 2052864 2064384 2079756 2095632 2100978 2112768 2128896 2146304 2162688 2178792 2195424 2207744 2213376 2230272 2259488 2276736 2282544 2286144 2322432 2330097 2376864 2395008 2408448 2414592 2433024 2451141 2464896 2469852 2483712 2490048 2509056 2523136 2541924 2561328 2567862 2582272 2601984 2612736 2654208 2662968 2673972 2709504 2716416 2737152 2752512 2773008 2794176 2801304 2817024 2822688 2838528 2881494 2905056 2927232 2951168 2973696 2985984 2995839 3035648 3043392 3048192 3055968 3096576 3106796 3119634 3143448 3169152 3193344 3211264 3219456 3244032 3268188 3286528 3293136 3311616 3320064 3345408 3389232 3415104 3423816 3469312 3483648 3538944 3550624 3565296 3592512 3612672 3621888 3649536 3697344 3725568 3735072 3756032 3763584 3784704 3812886 3841992 3851793 3873408 3902976 3964928 3981312 3994452 4057856 4064256 4074624 4105728 4128768 4159512 4191264 4201956 4225536 4257792 4292608 4322241 4325376 4357584 4390848 4415488 4426752 4460544 4518976 4553472 4565088 4572288 4644864 4660194 4679451 4753728 4790016 4816896 4829184 4866048 4902282 4929792 4939704 4967424 4980096 5018112 5046272 5083848 5122656 5135724 5164544 5203968 5225472 5308416 5325936 5347944 5419008 5432832 5474304 5546016 5588352 5602608 5634048 5645376 5677056 5719329 5762988 5810112 5854464 5902336 5947392 5971968 5991678 6071296 6086784 6096384 6111936 6193152 6213592 6239268 6286896 6338304 6386688 6422528 6438912 6488064 6536376 6573056 6586272 6623232 6640128 6690816 6778464 6830208 6847632 6938624 6967296 6990291 7101248 7130592 7185024 7225344 7243776 7299072 7353423 7394688 7451136 7470144 7512064 7527168 7569408 7625772 7683984 7703586 7746816 7805952 7929856 7962624 7988904 8115712 8128512 8149248 8211456 8257536 8319024 8382528 8403912 8451072 8515584 8585216 8644482 8715168 8781696 8830976 8853504 8921088 8987517 9037952 9106944 9130176 9144576 9289728 9320388 9358902 9507456 9580032 9633792 9658368 9732096 9804564 9859584 9879408 9934848 9960192 10036224 10092544 10167696 10245312 10271448 10329088 10407936 10450944 10616832 10651872 10695888 10838016 10865664 10948608 11092032 11176704 11205216 11268096 11290752 11354112 11438658 11525976 11555379 11620224 11708928 11804672 11894784 11943936 11983356 12142592 12173568 12192768 12223872 12386304 12427184 12478536 12573792 12676608 12773376 12877824 12976128 13072752 13146112 13172544 13246464 13280256 13381632 13556928 13660416 13695264 13877248 13934592 13980582 14202496 14261184 14370048 14450688 14487552 14598144 14706846 14789376 14902272 14940288 15024128 15054336 15138816 15251544 15367968 15407172 15493632 15611904 15859712 15925248 15977808 16231424 16257024 16298496 16422912 16638048 16765056 16807824 16902144 17031168 17157987 17170432 17288964 17430336 17563392 17661952 17707008 17842176 17975034 18075904 18213888 18260352 18289152 18579456 18640776 18717804 19014912 19160064 19267584 19316736 19464192 19609128 19719168 19758816 19869696 19920384 20072448 20335392 20490624 20542896 20658176 20815872 20901888 20970873 21303744 21391776 21676032 21731328 21897216 22184064 22353408 22410432 22536192 22581504 22708224 22877316 23051952 23110758 23240448 23417856 23609344 23789568 23887872 23966712 24285184 24347136 24385536 24447744 24772608 24854368 24957072 25147584 25353216 25546752 25755648 26145504 26292224 26345088 26492928 26560512 26763264 26962551 27113856 27320832 27390528 27754496 27869184 27961164 28404992 28522368 28740096 28901376 28975104 29196288 29413692 29578752 29804544 29880576 30048256 30108672 30277632 30503088 30735936 30814344 30987264 31223808 31850496 31955616 32462848 32514048 32596992 32845824 33276096 33530112 33615648 33804288 34062336 34315974 34577928 34860672 35126784 35323904 35414016 35684352 35950068 36151808 36427776 36520704 36578304 37158912 37281552 37435608 38029824 38320128 38633472 38928384 39218256 39438336 39517632 39739392 39840768 40144896 40670784 40981248 41085792 41316352 41631744 41803776 41941746 42607488 42783552 43352064 43462656 43794432 44368128 44706816 44820864 45072384 45163008 45416448 45754632 46103904 46221516 46480896 46835712 47218688 47579136 47775744 47933424 48570368 48694272 48771072 48895488 49708736 49914144 50295168 50706432 51093504 51473961 51511296 52291008 52584448 52690176 52985856 53121024 53526528 53925102 54227712 54641664 54781056 55508992 55738368 55922328 56809984 57044736 57480192 57802752 57950208 58392576 58827384 59157504 59609088 59761152 60096512 60217344 61006176 61471872 61628688 61974528 62447616 62912619 63911232 64925696 65028096 65193984 65691648 66552192 67060224 67231296 67608576 68124672 68631948 69155856 69721344 70253568 70647808 70828032 71368704 71900136 72303616 72855552 73041408 73156608 74317824 74563104 74871216 76059648 76640256 77266944 78436512 78876672 79035264 79478784 79681536 80289792 80887653 81341568 81962496 82171584 82632704 83263488 83607552 83883492 85214976 85567104 86704128 86925312 87588864 88736256 89413632 89641728 90144768 90326016 90832896 91509264 92207808 92443032 92961792 93671424 94437376 95551488 95866848 97140736 97388544 97542144 97790976 99417472 99828288 100590336 101412864 102187008 102947922 104582016 105168896 105380352 105971712 106242048 107053056 107850204 108455424 109283328 109562112 111017984 111476736 111844656 113619968 114089472 114960384 115900416 116785152 117654768 118315008 119218176 119522304 120193024 120434688 122012352 122943744 123257376 123949056 124895232 125825238 127822464 129851392 130056192 130387968 131383296 133104384 134120448 134462592 135217152 136249344 137263896 138311712 139442688 140507136 141656064 142737408 143800272 144607232 145711104 146082816 146313216 149126208 149742432 152119296 153280512 154533888 156873024 157753344 158070528 158957568 159363072 160579584 161775306 162683136 163924992 164343168 165265408 166526976 167215104 167766984 170429952 171134208 173408256 173850624 175177728 177472512 178827264 179283456 180289536 180652032 183018528 184415616 184886064 185923584 187342848 188737857 188874752 191733696 194281472 194777088 195084288 195581952 198834944 199656576 201180672 202825728 204374016 205895844 209164032 210337792 210760704 211943424 212484096 214106112 215700408 216910848 218566656 219124224 222953472 223689312 227239936 228178944 229920768 231800832 235309536 236630016 238436352 239044608 240869376 244024704 245887488 246514752 247898112 249790464 251650476 255644928 259702784 260112384 260775936 262766592 266208768 268240896 268925184 270434304 272498688 274527792 276623424 278885376 281014272 283312128 287600544 289214464 291422208 292165632 292626432 298252416 299484864 304238592 306561024 313746048 315506688 316141056 317915136 318726144 321159168 323550612 325366272 327849984 328686336 330530816 333053952 334430208 335533968 340859904 342268416 347701248 350355456 354945024 357654528 358566912 360579072 361304064 366037056 368831232 369772128 371847168 374685696 377475714 383467392 388562944 389554176 390168576 391163904 397669888 399313152 402361344 405651456 408748032 411791688 418328064 420675584 421521408 424968192 428212224 431400816 433821696 437133312 438248448 447378624 454479872 456357888 459841536 463601664 470619072 473260032 476872704 478089216 481738752 488049408 491774976 493029504 495796224 499580928 503300952 511289856 519405568 520224768 521551872 525533184 532417536 536481792 537850368 540868608 549055584 553246848 557770752 562028544 566213571 566624256 575201088 578428928 582844416 584331264 585252864 596504832 598969728 608477184 613122048 627492096 631013376 632282112 635830272 637452288 642318336 647101224 650732544 655699968 657372672 661061632 668860416 671067936 681719808 684536832 695402496 709890048 715309056 717133824 722608128 732074112 737662464 739544256 743694336 749371392 754951428 766934784 777125888 779108352 780337152 782327808 795339776 798626304 804722688 811302912 817496064 823583376 836656128 841351168 843042816 849936384 862801632 867643392 874266624 876496896 894757248 908959744 912715776 919683072 941238144 946520064 953745408 956178432 963477504 976098816 983549952 986059008 991592448 999161856 1006601904 1022579712 1038811136 1043103744 1051066368 1064835072 1072963584 1075700736 1081737216 1098111168 1106493696 1115541504 1124057088 1132427142 1150402176 1156857856 1165688832 1168662528 1170505728 1193009664 1197939456 1216954368 1226244096 1254984192 1262026752 1264564224 1274904576 1284636672 1294202448 1301465088 1311399936 1314745344 1322123264 1342135872 1363439616 1369073664 1390804992 1419780096 1430618112 1434267648 1445216256 1464148224 1475324928 1479088512 1487388672 1498742784 1509902856 1533869568 1558216704 1560674304 1564655616 1590679552 1597252608 1609445376 1622605824 1647166752 1673312256 1686085632 1699872768 1725603264 1735286784 1748533248 1752993792 1789514496 1817919488 1825431552 1839366144 1882476288 1893040128 1907490816 1912356864 1926955008 1952197632 1967099904 1972118016 1983184896 2013203808 2045159424 2077622272 2086207488 2129670144 2145927168 2151401472 2196222336 2212987392 2231083008 2248114176 2264854284 2300804352 2313715712 2331377664 2337325056 2341011456 2386019328 2395878912 2433908736 2452488192 2509968384 2524053504 2529128448 2549809152 2588404896 2602930176 2622799872 2629490688 2684271744 2726879232 2738147328 2839560192 2861236224 2868535296 2890432512 2928296448 2950649856 2958177024 2974777344 2997485568 3019805712 3067739136 3116433408 3129311232 3181359104 3194505216 3218890752 3245211648 3294333504 3346624512 3372171264 3451206528 3470573568 3497066496 3505987584 3579028992 3635838976 3650863104 3678732288 3764952576 3786080256 3824713728 3853910016 3904395264 3934199808 3944236032 3966369792 4026407616 4090318848 4172414976 4259340288 4291854336 4302802944 4392444672 4425974784 4462166016 4496228352 4529708568 4601608704 4627431424 4674650112 4682022912 4772038656 4791757824 4867817472 5019936768 5058256896 5099618304 5176809792 5205860352 5245599744 5258981376 5368543488 5453758464 5476294656 5679120384 5722472448 5737070592 5780865024 5856592896 5901299712 5916354048 5949554688 6039611424 6135478272 6232866816 6258622464 6362718208 6389010432 6437781504 6588667008 6693249024 6744342528 6902413056 6941147136 6994132992 7011975168 7158057984 7271677952 7301726208 7357464576 7529905152 7572160512 7649427456 7808790528 7868399616 7888472064 8052815232 8180637696 8518680576 8583708672 8605605888 8784889344 8851949568 8924332032 8992456704 9059417136 9203217408 9254862848 9349300224 9544077312 9583515648 9735634944 10039873536 10116513792 10353619584 10411720704 10491199488 10517962752 10737086976 10907516928 10952589312 11358240768 11474141184 11561730048 11713185792 11802599424 11832708096 11899109376 12079222848 12270956544 12517244928 12725436416 12778020864 12875563008 13177334016 13386498048 13488685056 13804826112 13882294272 14023950336 14316115968 14543355904 14603452416 15059810304 15298854912 15617581056 15736799232 15776944128 16105630464 16361275392 17037361152 17167417344 17211211776 17569778688 17703899136 17848664064 18118834272 18406434816 18698600448 19088154624 19167031296 20079747072 20233027584 20707239168 20823441408 20982398976 21035925504 21474173952 21815033856 21905178624 22716481536 22948282368 23426371584 23605198848 23665416192 24158445696 24541913088 25450872832 25556041728 25751126016 26354668032 26772996096 26977370112 27609652224 27764588544 28047900672 28632231936 29206904832 30119620608 31235162112 31473598464 31553888256 32211260928 32722550784 34074722304 34422423552 35139557376 35407798272 35697328128 36237668544 36812869632 38176309248 38334062592 40159494144 40466055168 41414478336 41646882816 42071851008 42948347904 43630067712 43810357248 45896564736 46852743168 47210397696 47330832384 48316891392 49083826176 50901745664 51112083456 51502252032 52709336064 53545992192 55219304448 56095801344 57264463872 60239241216 62470324224 62947196928 63107776512 64422521856 65445101568 68149444608 68844847104 70279114752 70815596544 72475337088 73625739264 76352618496 76668125184 80318988288 80932110336 82828956672 83293765632 84143702016 85896695808 87620714496 93705486336 94420795392 94661664768 96633782784 98167652352 101803491328 102224166912 105418672128 107091984384 110438608896 114528927744 120478482432 124940648448 126215553024 128845043712 130890203136 137689694208 140558229504 141631193088 144950674176 147251478528 152705236992 153336250368 160637976576 165657913344 168287404032 171793391616 187410972672 188841590784 189323329536 193267565568 196335304704 204448333824 210837344256 220877217792 229057855488 240956964864 249881296896 252431106048 257690087424 281116459008 283262386176 289901348352 294502957056 305410473984 306672500736 321275953152 331315826688 343586783232 374821945344 378646659072 386535131136 392670609408 421674688512 441754435584 458115710976 481913929728 504862212096 515380174848 562232918016 566524772352 579802696704 589005914112 613345001472 662631653376 687173566464 749643890688 757293318144 773070262272 843349377024 883508871168 916231421952 963827859456 1030760349696 1124465836032 1159605393408 1178011828224 1325263306752 1374347132928 1514586636288 1546140524544 1686698754048 1767017742336 2061520699392 2248931672064 2319210786816 2650526613504 2748694265856 3092281049088 3373397508096 3534035484672 4123041398784 4638421573632 5301053227008 6184562098176 6746795016192 8246082797568 9276843147264 10602106454016 12369124196352 18553686294528 24738248392704 37107372589056 74214745178112
- Sum of all divisors σ(n): 286720572430908
- Sum of proper divisors (its aliquot sum) s(n): 212505827252796
- 74214745178112 is an abundant number, because the sum of its proper divisors (212505827252796) is greater than itself. Its abundance is 138291082074684
Bases of 74214745178112
- Binary: 100001101111111011101111000011000000000000000002
- Hexadecimal: 0x437F77860000
- Base-36: QB1S74000
Squares and roots of 74214745178112
- 74214745178112 squared (742147451781122) is 5507828401852098354603884544
- 74214745178112 cubed (742147451781123) is 408762081328221339412527809577608363900928
-
The
square root of 74214745178112 is 8614798.0346675569 -
The
cube root of 74214745178112 is 42023.9366913799
Scales and comparisons
How big is 74214745178112?- 74,214,745,178,112 seconds is equal to 2,359,799 years, 17 weeks, 3 days, 1 hour, 55 minutes, 12 seconds.
-
To count from 1 to 74,214,745,178,112 would take you about five million, eight hundred ninety-nine thousand, four hundred ninety-eight years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 74214745178112 cubic inches would be around 3502 feet tall.
Recreational maths with 74214745178112
- 74214745178112 backwards is 21187154741247
- 74214745178112 is a
Harshad number . - The number of decimal digits it has is: 14
- The sum of 74214745178112's digits is 54
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 74214745178112 - Facts about the integer". Numbermatics.com. 2024. Web. 26 May 2024.
APA style:
Numbermatics. (2024). Number 74214745178112 - Facts about the integer. Retrieved 26 May 2024, from https://numbermatics.com/n/74214745178112/
Chicago style:
Numbermatics. 2024. "Number 74214745178112 - Facts about the integer". https://numbermatics.com/n/74214745178112/
The information we have on file for 74214745178112 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 74214745178112, math, Factors of 74214745178112, curriculum, school, college, exams, university, Prime factorization of 74214745178112, STEM, science, technology, engineering, physics, economics, calculator, seventy-four trillion, two hundred fourteen billion, seven hundred forty-five million, one hundred seventy-eight thousand, one hundred twelve.