49265850345600
49,265,850,345,600 is an even composite number composed of seven prime numbers multiplied together.
49265850345600 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two thousand, three hundred four divisors.
Prime factorization of 49265850345600:
27 × 3 × 52 × 7 × 173 × 372 × 109
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 5 × 7 × 17 × 17 × 17 × 37 × 37 × 109)See below for interesting mathematical facts about the number 49265850345600 from the Numbermatics database.
Names of 49265850345600
- Cardinal: 49265850345600 can be written as Forty-nine trillion, two hundred sixty-five billion, eight hundred fifty million, three hundred forty-five thousand, six hundred.
Scientific notation
- Scientific notation: 4.92658503456 × 1013
Factors of 49265850345600
Divisors of 49265850345600
- Number of divisors d(n): 2304
-
Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 17 20 21 24 25 28 30 32 34 35 37 40 42 48 50 51 56 60 64 68 70 74 75 80 84 85 96 100 102 105 109 111 112 119 120 128 136 140 148 150 160 168 170 175 185 192 200 204 210 218 222 224 238 240 255 259 272 280 289 296 300 320 327 336 340 350 357 370 384 400 408 420 425 436 444 448 476 480 510 518 525 544 545 555 560 578 592 595 600 629 640 654 672 680 700 714 740 763 777 800 816 840 850 867 872 888 896 925 952 960 1020 1036 1050 1088 1090 1110 1120 1156 1184 1190 1200 1258 1275 1295 1308 1344 1360 1369 1400 1428 1445 1480 1526 1554 1600 1632 1635 1680 1700 1734 1744 1776 1785 1850 1853 1887 1904 1920 2023 2040 2072 2100 2176 2180 2220 2240 2289 2312 2368 2380 2400 2516 2550 2590 2616 2688 2720 2725 2738 2775 2800 2856 2890 2960 2975 3052 3108 3145 3200 3264 3270 3360 3400 3468 3488 3552 3570 3700 3706 3774 3808 3815 3885 4033 4046 4080 4107 4144 4200 4335 4360 4403 4440 4480 4578 4624 4736 4760 4800 4913 5032 5100 5180 5232 5440 5450 5476 5550 5559 5600 5712 5780 5920 5950 6069 6104 6216 6290 6475 6528 6540 6720 6800 6845 6936 6976 7104 7140 7225 7400 7412 7548 7616 7630 7770 8066 8092 8160 8175 8214 8288 8400 8670 8720 8806 8880 8925 9156 9248 9265 9435 9520 9583 9600 9826 10064 10115 10200 10360 10464 10693 10880 10900 10952 11100 11118 11200 11424 11445 11560 11840 11900 12099 12138 12208 12432 12580 12950 12971 13080 13209 13440 13600 13690 13872 13952 14208 14280 14450 14739 14800 14824 15096 15232 15260 15540 15725 16132 16184 16320 16350 16428 16576 16800 17340 17440 17612 17760 17850 18312 18496 18530 18870 19040 19075 19166 19425 19652 20128 20165 20230 20400 20535 20720 20928 21386 21675 21800 21904 22015 22200 22236 22400 22848 22890 23120 23273 23680 23800 24198 24276 24416 24565 24864 25160 25900 25942 26160 26418 27200 27380 27744 27795 28231 28560 28749 28900 29478 29600 29648 30192 30345 30520 31080 31450 31501 32079 32264 32368 32640 32700 32856 33152 33600 34225 34391 34680 34880 35224 35520 35700 36624 36992 37060 37740 38080 38150 38332 38850 38913 39304 40256 40330 40460 40800 41070 41440 41856 42772 43350 43600 43808 44030 44400 44472 45696 45780 46240 46325 46546 47175 47600 47915 48396 48552 48832 49130 49728 50320 50575 51800 51884 52320 52836 53465 54400 54760 55488 55590 56462 57120 57225 57498 57800 58956 59200 59296 60384 60495 60690 61040 62160 62900 63002 64158 64528 64736 64855 65400 65712 66045 67200 68450 68561 68782 69360 69760 69819 70448 71040 71400 73248 73695 74120 74851 75480 76160 76300 76664 77700 77826 78608 80512 80660 80920 81600 82140 82880 84693 85544 86700 87200 87616 88060 88800 88944 91560 92480 92650 93092 94350 94503 95200 95830 96792 97104 97664 98260 99456 100640 100825 101150 102675 103173 103600 103768 104640 105672 106930 109520 110075 110976 111180 112924 114240 114450 114996 115600 116365 117912 118400 118592 120768 120990 121380 122080 122825 124320 125800 126004 128316 129056 129472 129710 130800 131424 132090 136900 137122 137564 138720 138975 139638 140896 141155 142800 143745 146496 147390 148240 149221 149702 150960 151725 152600 153328 155400 155652 157216 157505 160395 161320 161840 162911 163200 164280 165760 169386 171088 171955 173400 174400 175232 176120 177600 177888 181781 183120 184960 185300 186184 188700 189006 190400 191660 193584 194208 194565 196520 201280 201650 202300 205350 205683 206346 207200 207536 209280 211344 213860 219040 220150 220507 222360 224553 225848 228480 228900 229992 231200 232730 235824 237184 239575 241536 241980 242760 244160 245650 248640 251600 252008 256632 258112 258944 259420 261600 262848 264180 267325 273800 274244 275128 277440 277950 279276 281792 282310 285600 287490 292992 294780 296480 298442 299404 301920 302475 303450 305200 306656 310800 311304 314432 315010 320790 322640 323680 324275 325822 328560 330225 338772 342176 342805 343910 346800 348800 349095 352240 355200 355776 363562 366240 368475 370600 372368 374255 377400 378012 380800 383320 387168 388416 389130 393040 395641 402560 403300 404600 410700 411366 412692 414400 415072 422688 423465 427720 438080 440300 441014 444720 447663 449106 451696 457800 459984 462400 465460 471648 472515 479150 479927 483960 485520 488320 488733 491300 497280 503200 504016 513264 515865 516224 518840 523200 525696 528360 534650 535517 545343 547600 548488 550256 554880 555900 558552 563584 564620 571200 574980 581825 589560 592960 596884 598808 603840 604950 606900 610400 613312 621600 622608 628864 630020 641580 645280 647360 648550 651644 657120 660450 661521 677544 684352 685610 687820 693600 698190 704480 705775 711552 718725 727124 732480 736950 741200 744736 746105 748510 754800 756024 766640 774336 776832 778260 786080 787525 791282 801975 806600 809200 814555 821400 822732 825384 828800 830144 845376 846930 855440 859775 876160 880600 882028 889440 895326 898212 903392 908905 915600 919968 924800 930920 943296 945030 958300 959854 967920 971040 972825 977466 982600 1006400 1008032 1026528 1028415 1031730 1037680 1044547 1046400 1056720 1069300 1071034 1090686 1095200 1096976 1100512 1102535 1111800 1117104 1122765 1129240 1142400 1149960 1163650 1165537 1179120 1185920 1186923 1193768 1197616 1207680 1209900 1213800 1220800 1226624 1243200 1245216 1260040 1272467 1283160 1290560 1294720 1297100 1303288 1314240 1320900 1323042 1355088 1368704 1371220 1375640 1387200 1396380 1408960 1411550 1437450 1439781 1454248 1464960 1473900 1482400 1489472 1492210 1497020 1509600 1512048 1533280 1548672 1556520 1572160 1575050 1582564 1603950 1606551 1613200 1618400 1629110 1642800 1645464 1650768 1660288 1690752 1693860 1710880 1714025 1719550 1745475 1761200 1764056 1778880 1790652 1796424 1806784 1817810 1831200 1839936 1861840 1871275 1886592 1890060 1916600 1919708 1935840 1942080 1945650 1954932 1965200 1978205 2012800 2016064 2053056 2056830 2063460 2075360 2089094 2113440 2117325 2138600 2142068 2181372 2190400 2193952 2201024 2205070 2223600 2234208 2238315 2245530 2258480 2299920 2327300 2331074 2358240 2362575 2373846 2387536 2395232 2399635 2419800 2427600 2441600 2443665 2486400 2490432 2520080 2536757 2544934 2566320 2579325 2581120 2594200 2606576 2628480 2641800 2646084 2677585 2710176 2726715 2742440 2751280 2769487 2774400 2792760 2817920 2823100 2874900 2879562 2908496 2947800 2964800 2978944 2984420 2994040 3019200 3024096 3066560 3113040 3133641 3144320 3150100 3165128 3207900 3213102 3226400 3236800 3258220 3285600 3290928 3301536 3307605 3387720 3421760 3428050 3439100 3490950 3496611 3522400 3528112 3557760 3581304 3592848 3613568 3635620 3662400 3679872 3723680 3730525 3742550 3748619 3780120 3817401 3833200 3839416 3871680 3884160 3891300 3909864 3930400 3956410 4032128 4072775 4106112 4113660 4126920 4150720 4178188 4226880 4234650 4277200 4284136 4362744 4380800 4387904 4402048 4410140 4447200 4468416 4476630 4491060 4516960 4544525 4599840 4654600 4662148 4716480 4725150 4747692 4775072 4790464 4799270 4839600 4855200 4887330 4980864 5040160 5073514 5089868 5132640 5142075 5158650 5188400 5213152 5222735 5283600 5292168 5355170 5420352 5453430 5484880 5502560 5512675 5538974 5585520 5613825 5646200 5749800 5759124 5816992 5827685 5895600 5929600 5934615 5968840 5988080 6038400 6048192 6133120 6226080 6267282 6300200 6330256 6362335 6415800 6426204 6452800 6473600 6516440 6571200 6581856 6603072 6615210 6725897 6775440 6843520 6856100 6878200 6981900 6993222 7044800 7056224 7162608 7185696 7198905 7271240 7324800 7447360 7461050 7485100 7497238 7560240 7610271 7634802 7666400 7678832 7743360 7782600 7819728 7860800 7912820 8032755 8145550 8158759 8227320 8253840 8301440 8308461 8356376 8453760 8469300 8554400 8568272 8725488 8775808 8820280 8894400 8936832 8953260 8982120 9033920 9089050 9199680 9309200 9324296 9432960 9450300 9495384 9550144 9580928 9598540 9679200 9710400 9774660 9891025 10080320 10147028 10179736 10265280 10284150 10317300 10376800 10426304 10445470 10567200 10584336 10710340 10840704 10906860 10969760 11005120 11025350 11077948 11171040 11191575 11227650 11245857 11292400 11499600 11518248 11633984 11655370 11791200 11869230 11937680 11976160 11998175 12096384 12218325 12452160 12534564 12600400 12660512 12683785 12724670 12831600 12852408 12905600 13032880 13142400 13163712 13206144 13230420 13387925 13451794 13550880 13633575 13712200 13756400 13847435 13963800 13986444 14089600 14112448 14325216 14371392 14397810 14542480 14894720 14922100 14970200 14994476 15120480 15220542 15269604 15332800 15357664 15565200 15639456 15668205 15721600 15825640 16065510 16291100 16317518 16454640 16507680 16538025 16616922 16712752 16938600 17108800 17136544 17450976 17483055 17640560 17757299 17788800 17906520 17964240 18067840 18178100 18399360 18618400 18648592 18743095 18900600 18990768 19087005 19100288 19197080 19358400 19420800 19549320 19782050 19814129 20160640 20177691 20294056 20359472 20530560 20568300 20634600 20753600 20852608 20890940 21134400 21168672 21420680 21813720 21939520 22010240 22050700 22155896 22342080 22383150 22455300 22491714 22584800 22999200 23036496 23267968 23310740 23582400 23738460 23875360 23952320 23996350 24436650 24476277 24904320 25069128 25200800 25321024 25367570 25449340 25663200 25704816 26065760 26113675 26327424 26460840 26775850 26903588 27101760 27267150 27424400 27512800 27694870 27927600 27972888 28224896 28650432 28742784 28795620 29084960 29138425 29673075 29844200 29940400 29988952 30240960 30441084 30539208 30665600 30715328 31130400 31278912 31336410 31651280 31811675 32131020 32582200 32635036 32909280 33015360 33076050 33233844 33425504 33629485 33877200 34217600 34273088 34901952 34966110 35281120 35514598 35813040 35928480 35994525 36356200 37236800 37297184 37486190 37801200 37981536 38051355 38174010 38394160 38716800 39098640 39564100 39628258 40163775 40355382 40588112 40718944 40793795 41136600 41269200 41507200 41542305 41781880 42268800 42337344 42841360 43124869 43627440 43879040 44101400 44311792 44684160 44766300 44910600 44983428 45169600 45998400 46072992 46621480 47081279 47164800 47476920 47750720 47904640 47992700 48873300 48952554 50138256 50401600 50642048 50735140 50898680 51326400 51409632 52131520 52227350 52921680 53271897 53551700 53807176 54203520 54534300 54848800 55025600 55389740 55855200 55945776 56229285 57300864 57591240 58169920 58276850 59346150 59442387 59688400 59880800 59977904 60481920 60882168 61078416 61430656 62260800 62557824 62672820 63302560 63418925 63623350 64262040 65164400 65270072 65818560 66030720 66152100 66467688 66851008 67258970 67754400 68546176 69237175 69803904 69932220 70562240 71029196 71626080 71856960 71989050 72712400 74473600 74594368 74972380 75602400 75963072 76102710 76348020 76788320 78197280 78341025 79128200 79256516 80327550 80710764 81176224 81437888 81587590 82273200 82538400 83084610 83563760 84674688 85682720 86249738 87254880 87415275 88202800 88623584 88786495 89532600 89821200 89966856 90339200 91996800 92145984 93242960 93715475 94162558 94953840 95435025 95501440 95985400 97746600 97905108 99070645 100276512 100803200 100888455 101470280 101797360 102652800 102819264 104263040 104454700 105843360 106543794 107103400 107614352 109068600 109697600 110051200 110779480 111710400 111891552 112458570 115182480 116339840 116553700 118692300 118884774 119376800 119761600 119955808 121764336 122156832 122381385 124521600 125345640 126605120 126837850 127246700 128524080 129374607 130328800 130540144 131637120 132304200 132935376 133702016 134517940 135508800 138474350 138698903 139864440 141124480 141243837 142058392 143252160 143713920 143978100 145424800 149188736 149944760 151204800 151926144 152205420 152696040 153576640 156394560 156682050 158256400 158513032 160655100 161421528 162352448 162875776 163175180 164546400 165076800 166169220 167127520 168147425 171365440 172499476 174509760 174830550 176405600 177247168 177572990 179065200 179642400 179933712 184291968 186485920 187430950 188325116 189907680 190256775 190870050 191970800 195493200 195810216 198141290 200553024 201776910 202940560 203594720 203968975 205638528 207711525 208909400 211686720 213087588 214206800 215228704 215624345 218137200 219395200 221558960 223420800 223783104 224917140 230364960 233107400 235406395 237384600 237769548 238753600 239523200 239911616 243528672 244313664 244762770 250691280 253210240 253675700 254493400 257048160 258749214 260657600 261080288 264608400 265870752 266359485 269035880 271017600 276948700 277397806 279728880 281146425 282487674 284116784 286504320 287956200 290849600 297211935 299889520 301874083 302409600 304410840 305392080 307153280 312789120 313364100 316512800 317026064 321310200 322843056 324704896 326350360 329092800 330153600 332338440 334255040 336294850 342730880 344998952 349019520 349661100 352811200 354494336 355145980 358130400 359284800 359867424 372971840 374861900 376650232 379815360 380513550 381740100 383941600 390986400 391620432 396282580 401106048 403553820 405881120 407189440 407937950 415423050 416096709 417818800 423373440 426175176 428413600 430457408 431248690 436274400 443117920 443932475 447566208 449834280 460729920 466214800 470812790 474769200 475539096 477507200 479823232 487057344 488627328 489525540 495353225 501382560 504442275 507351400 508986800 514096320 517498428 521315200 522160576 529216800 531741504 532718970 538071760 553897400 554795612 559457760 562292850 564975348 568233568 575912400 581699200 594423870 599779040 603748166 608821680 610784160 611906925 626728200 633025600 634052128 642620400 645686112 646873035 652700720 658185600 664676880 668510080 672589700 689997904 693494515 699322200 705622400 706219185 710291960 716260800 718569600 719734848 733122773 745943680 749723800 753300464 759630720 761027100 763480200 767883200 781972800 783240864 792565160 807107640 811762240 814378880 815875900 830846100 832193418 835637600 852350352 856827200 860914816 862497380 872548800 886235840 887864950 899668560 905622249 921459840 932429600 941625580 949538400 951078192 974114688 979051080 990706450 1002765120 1008884550 1014702800 1017973600 1028192640 1034996856 1044321152 1058433600 1063483008 1065437940 1076143520 1078121725 1107794800 1109591224 1118915520 1124585700 1129950696 1136467136 1151824800 1177031975 1188847740 1199558080 1207496332 1217643360 1221568320 1223813850 1253456400 1266051200 1268104256 1285240800 1291372224 1293746070 1305401440 1329353760 1331797425 1345179400 1379995808 1386989030 1398644400 1412438370 1420583920 1432521600 1439469696 1466245546 1486059675 1499447600 1506600928 1509370415 1522054200 1526960400 1535766400 1563945600 1566481728 1585130320 1614215280 1623524480 1631751800 1661692200 1664386836 1671275200 1704700704 1713654400 1724994760 1745097600 1772471680 1775729900 1799337120 1811244498 1864859200 1883251160 1899076800 1902156384 1958102160 1981412900 2005530240 2017769100 2029405600 2035947200 2069993712 2080483545 2116867200 2130875880 2152287040 2156243450 2199368319 2215589600 2219182448 2237831040 2249171400 2259901392 2272934272 2303649600 2354063950 2377695480 2399116160 2414992664 2435286720 2443136640 2447627700 2506912800 2536208512 2570481600 2582744448 2587492140 2610802880 2658707520 2663594850 2690358800 2759991616 2773978060 2797288800 2824876740 2841167840 2932491092 2972119350 2998895200 3013201856 3018740830 3044108400 3053920800 3132963456 3170260640 3228430560 3234365175 3263503600 3323384400 3328773672 3342550400 3409401408 3449989520 3467472575 3531095925 3551459800 3598674240 3622488996 3665613865 3729718400 3766502320 3798153600 3804312768 3916204320 3962825800 4035538200 4058811200 4071894400 4139987424 4160967090 4261751760 4304574080 4312486900 4398736638 4431179200 4438364896 4498342800 4519802784 4528111245 4607299200 4708127900 4755390960 4829985328 4870573440 4895255400 5013825600 5131859411 5140963200 5174984280 5221605760 5317415040 5327189700 5380717600 5519983232 5547956120 5594577600 5649753480 5682335680 5864982184 5944238700 5997790400 6026403712 6037481660 6088216800 6107841600 6340521280 6456861120 6468730350 6527007200 6646768800 6657547344 6818802816 6899979040 6934945150 7062191850 7102919600 7197348480 7244977992 7331227730 7533004640 7546852075 7608625536 7832408640 7925651600 8071076400 8117622400 8279974848 8321934180 8523503520 8624973800 8797473276 8862358400 8876729792 8996685600 9039605568 9056222490 9416255800 9510781920 9659970656 9790510800 10027651200 10263718822 10349968560 10402417725 10654379400 10761435200 10996841595 11095912240 11189155200 11299506960 11364671360 11729964368 11888477400 11995580800 12074963320 12176433600 12215683200 12681042560 12913722240 12937460700 13054014400 13293537600 13315094688 13799958080 13869890300 14124383700 14205839200 14489955984 14662455460 15066009280 15093704150 15395578233 15664817280 15851303200 16142152800 16559949696 16643868360 17047007040 17249947600 17594946552 17753459584 17993371200 18079211136 18112444980 18328069325 18832511600 19021563840 19319941312 19581021600 20527437644 20699937120 20804835450 21308758800 21522870400 21993683190 22191824480 22599013920 22640556225 23459928736 23776954800 24149926640 24352867200 25659297055 25874921400 26108028800 26587075200 26630189376 27599916160 27739780600 28248767400 28411678400 28979911968 29324910920 30132018560 30187408300 30791156466 31702606400 32284305600 33287736720 34094014080 34499895200 35189893104 35986742400 36224889960 36656138650 37665023200 38043127680 38639882624 39162043200 41054875288 41399874240 41609670900 42617517600 43987366380 44383648960 45198027840 45281112450 46919857472 47553909600 48299853280 51318594110 51749842800 53260378752 54984207975 55479561200 56497534800 56823356800 57959823936 58649821840 60374816600 61582312932 63405212800 64568611200 66575473440 68999790400 70379786208 72449779920 73312277300 75330046400 76977891165 78324086400 82109750576 82799748480 83219341800 85235035200 87974732760 88767297920 90396055680 90562224900 93839714944 95107819200 96599706560 102637188220 103499685600 109968415950 110959122400 112995069600 115919647872 117299643680 120749633200 123164625864 128296485275 133150946880 137999580800 140759572416 144899559840 146624554600 150660092800 153955782330 164219501152 166438683600 170470070400 175949465520 181124449800 190215638400 193199413120 205274376440 206999371200 219936831900 221918244800 225990139200 234599287360 241499266400 246329251728 256592970550 266301893760 281519144832 289799119680 293249109200 307911564660 328439002304 332877367200 351898931040 362248899600 384889455825 410548752880 413998742400 439873663800 443836489600 451980278400 469198574720 482998532800 492658503456 513185941100 579598239360 586498218400 615823129320 656878004608 665754734400 703797862080 724497799200 769778911650 821097505760 879747327600 965997065600 985317006912 1026371882200 1172996436800 1231646258640 1331509468800 1407595724160 1448995598400 1539557823300 1642195011520 1759494655200 1970634013824 2052743764400 2345992873600 2463292517280 2897991196800 3079115646600 3284390023040 3518989310400 4105487528800 4926585034560 6158231293200 7037978620800 8210975057600 9853170069120 12316462586400 16421950115200 24632925172800 49265850345600
- Sum of all divisors σ(n): 204366232224000
- Sum of proper divisors (its aliquot sum) s(n): 155100381878400
- 49265850345600 is an abundant number, because the sum of its proper divisors (155100381878400) is greater than itself. Its abundance is 105834531532800
Bases of 49265850345600
- Binary: 10110011001110100110011000001001101000100000002
- Hexadecimal: 0x2CCE99826880
- Base-36: HGOF3AETC
Squares and roots of 49265850345600
- 49265850345600 squared (492658503456002) is 2427124010275055639439360000
- 49265850345600 cubed (492658503456003) is 119574328260423407825332822846242816000000
-
The
square root of 49265850345600 is 7018963.6233278771 -
The
cube root of 49265850345600 is 36659.1165292855
Scales and comparisons
How big is 49265850345600?- 49,265,850,345,600 seconds is equal to 1,566,501 years, 33 weeks, 6 days, 5 hours, 20 minutes.
-
To count from 1 to 49,265,850,345,600 would take you about three million, nine hundred sixteen thousand, two hundred fifty-four 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 49265850345600 cubic inches would be around 3054.9 feet tall.
Recreational maths with 49265850345600
- 49265850345600 backwards is 00654305856294
- The number of decimal digits it has is: 14
- The sum of 49265850345600's digits is 57
- 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 49265850345600 - Facts about the integer". Numbermatics.com. 2024. Web. 28 May 2024.
APA style:
Numbermatics. (2024). Number 49265850345600 - Facts about the integer. Retrieved 28 May 2024, from https://numbermatics.com/n/49265850345600/
Chicago style:
Numbermatics. 2024. "Number 49265850345600 - Facts about the integer". https://numbermatics.com/n/49265850345600/
The information we have on file for 49265850345600 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 49265850345600, math, Factors of 49265850345600, curriculum, school, college, exams, university, Prime factorization of 49265850345600, STEM, science, technology, engineering, physics, economics, calculator, forty-nine trillion, two hundred sixty-five billion, eight hundred fifty million, three hundred forty-five thousand, six hundred.