81942373990400

Names of 81942373990400

• Cardinal: 81942373990400 can be written as Eighty-one trillion, nine hundred forty-two billion, three hundred seventy-three million, nine hundred ninety thousand, four hundred.

Scientific notation

• Scientific notation: 8.19423739904 × 10¹³

Factors of 81942373990400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 27
• Sum of prime factors: 86

Divisors of 81942373990400

• Number of divisors d(n): 1200
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 25 28 32 35 40 44 50 55 56 61 64 70 77 80 88 100 110 112 121 122 128 140 154 160 175 176 200 220 224 242 244 256 275 280 305 308 320 350 352 385 400 427 440 448 484 488 512 550 560 605 610 616 640 671 700 704 770 800 847 854 880 896 968 976 1024 1100 1120 1210 1220 1232 1280 1331 1342 1400 1408 1525 1540 1600 1694 1708 1760 1792 1925 1936 1952 2048 2135 2200 2240 2420 2440 2464 2560 2662 2684 2800 2816 3025 3050 3080 3200 3355 3388 3416 3520 3584 3850 3872 3904 4096 4235 4270 4400 4480 4697 4840 4880 4928 5120 5324 5368 5600 5632 6050 6100 6160 6400 6655 6710 6776 6832 7040 7168 7381 7700 7744 7808 8192 8470 8540 8800 8960 9317 9394 9680 9760 9856 10240 10648 10675 10736 11200 11264 12100 12200 12320 12800 13310 13420 13552 13664 14080 14336 14641 14762 15400 15488 15616 16384 16775 16940 17080 17600 17920 18634 18788 19360 19520 19712 20480 21175 21296 21350 21472 22400 22528 23485 24200 24400 24640 25600 26620 26840 27104 27328 28160 28672 29282 29524 30800 30976 31232 32768 33275 33550 33880 34160 35200 35840 36905 37268 37576 38720 39040 39424 40960 42350 42592 42700 42944 44800 45056 46585 46970 48400 48800 49280 51200 51667 53240 53680 54208 54656 56320 57344 58564 59048 61600 61952 62464 65536 66550 67100 67760 68320 70400 71680 73205 73810 74536 75152 77440 78080 78848 81191 81920 84700 85184 85400 85888 89600 90112 93170 93940 96800 97600 98560 102400 102487 103334 106480 107360 108416 109312 112640 114688 117128 117425 118096 123200 123904 124928 131072 133100 134200 135520 136640 140800 143360 146410 147620 149072 150304 154880 156160 157696 162382 163840 169400 170368 170800 171776 179200 180224 184525 186340 187880 193600 195200 197120 204800 204974 206668 212960 214720 216832 218624 225280 229376 232925 234256 234850 236192 246400 247808 249856 258335 262144 266200 268400 271040 273280 281600 286720 292820 295240 298144 300608 309760 312320 315392 324764 327680 338800 340736 341600 343552 358400 360448 366025 369050 372680 375760 387200 390400 394240 405955 409600 409948 413336 425920 429440 433664 437248 450560 458752 465850 468512 469700 472384 492800 495616 499712 512435 516670 524288 532400 536800 542080 546560 563200 568337 573440 585640 590480 596288 601216 619520 624640 630784 649528 655360 677600 681472 683200 687104 716800 720896 732050 738100 745360 751520 774400 780800 788480 811910 819200 819896 826672 851840 858880 867328 874496 893101 901120 917504 931700 937024 939400 944768 985600 991232 999424 1024870 1033340 1064800 1073600 1084160 1093120 1126400 1136674 1146880 1171280 1180960 1192576 1202432 1239040 1249280 1261568 1291675 1299056 1310720 1355200 1362944 1366400 1374208 1433600 1441792 1464100 1476200 1490720 1503040 1548800 1561600 1576960 1623820 1638400 1639792 1653344 1703680 1717760 1734656 1748992 1786202 1802240 1835008 1863400 1874048 1878800 1889536 1971200 1982464 1998848 2029775 2049740 2066680 2129600 2147200 2168320 2186240 2252800 2273348 2293760 2342560 2361920 2385152 2404864 2478080 2498560 2523136 2562175 2583350 2598112 2621440 2710400 2725888 2732800 2748416 2841685 2867200 2883584 2928200 2952400 2981440 3006080 3097600 3123200 3153920 3247640 3276800 3279584 3306688 3407360 3435520 3469312 3497984 3572404 3604480 3670016 3726800 3748096 3757600 3779072 3942400 3964928 3997696 4059550 4099480 4133360 4259200 4294400 4336640 4372480 4465505 4505600 4546696 4587520 4685120 4723840 4770304 4809728 4956160 4997120 5046272 5124350 5166700 5196224 5420800 5451776 5465600 5496832 5683370 5734400 5767168 5856400 5904800 5962880 6012160 6195200 6246400 6251707 6307840 6495280 6553600 6559168 6613376 6814720 6871040 6938624 6995968 7144808 7208960 7453600 7496192 7515200 7558144 7884800 7929856 7995392 8119100 8198960 8266720 8518400 8588800 8673280 8744960 8931010 9011200 9093392 9175040 9370240 9447680 9540608 9619456 9912320 9994240 10092544 10248700 10333400 10392448 10841600 10903552 10931200 10993664 11366740 11468800 11712800 11809600 11925760 12024320 12390400 12492800 12503414 12615680 12990560 13107200 13118336 13226752 13629440 13742080 13877248 13991936 14208425 14289616 14417920 14907200 14992384 15030400 15116288 15769600 15859712 15990784 16238200 16397920 16533440 17036800 17177600 17346560 17489920 17862020 18022400 18186784 18350080 18740480 18895360 19081216 19238912 19824640 19988480 20185088 20497400 20666800 20784896 21683200 21807104 21862400 21987328 22327525 22733480 22937600 23425600 23619200 23851520 24048640 24780800 24985600 25006828 25231360 25981120 26236672 26453504 27258880 27484160 27754496 27983872 28416850 28579232 28835840 29814400 29984768 30060800 30232576 31258535 31539200 31719424 31981568 32476400 32795840 33066880 34073600 34355200 34693120 34979840 35724040 36044800 36373568 37480960 37790720 38162432 38477824 39649280 39976960 40370176 40994800 41333600 41569792 43366400 43614208 43724800 43974656 44655050 45466960 45875200 46851200 47238400 47703040 48097280 49561600 49971200 50013656 50462720 51962240 52473344 52907008 54517760 54968320 55508992 55967744 56833700 57158464 59628800 59969536 60121600 60465152 62517070 63078400 63438848 64952800 65591680 66133760 68147200 68710400 69386240 69959680 71448080 72089600 72747136 74961920 75581440 76324864 76955648 79298560 79953920 81989600 82667200 83139584 86732800 87228416 87449600 87949312 89310100 90933920 91750400 93702400 94476800 95406080 96194560 99123200 99942400 100027312 100925440 103924480 104946688 105814016 109035520 109936640 111017984 111935488 113667400 114316928 119257600 119939072 120243200 120930304 125034140 126156800 129905600 131183360 132267520 136294400 137420800 138772480 139919360 142896160 144179200 145494272 149923840 151162880 152649728 153911296 156292675 158597120 159907840 163979200 165334400 166279168 173465600 174456832 174899200 175898624 178620200 181867840 187404800 188953600 190812160 192389120 198246400 199884800 200054624 201850880 207848960 209893376 211628032 218071040 219873280 222035968 223870976 227334800 228633856 238515200 239878144 240486400 241860608 250068280 252313600 259811200 262366720 264535040 272588800 274841600 277544960 279838720 285792320 290988544 299847680 302325760 305299456 307822592 312585350 317194240 327958400 330668800 332558336 346931200 348913664 349798400 351797248 357240400 363735680 374809600 377907200 381624320 384778240 396492800 399769600 400109248 415697920 419786752 423256064 436142080 439746560 444071936 454669600 457267712 477030400 479756288 480972800 483721216 500136560 504627200 519622400 524733440 529070080 545177600 549683200 555089920 559677440 571584640 581977088 599695360 604651520 610598912 615645184 625170700 655916800 661337600 665116672 693862400 697827328 699596800 714480800 727471360 749619200 755814400 763248640 769556480 792985600 799539200 800218496 831395840 839573504 846512128 872284160 879493120 909339200 914535424 954060800 959512576 961945600 967442432 1000273120 1009254400 1039244800 1049466880 1058140160 1090355200 1099366400 1110179840 1119354880 1143169280 1163954176 1199390720 1209303040 1221197824 1231290368 1250341400 1311833600 1322675200 1330233344 1387724800 1399193600 1428961600 1454942720 1499238400 1511628800 1526497280 1539112960 1585971200 1600436992 1662791680 1679147008 1693024256 1744568320 1758986240 1818678400 1829070848 1908121600 1919025152 1923891200 1934884864 2000546240 2078489600 2098933760 2116280320 2180710400 2198732800 2220359680 2286338560 2327908352 2398781440 2418606080 2442395648 2462580736 2500682800 2623667200 2645350400 2660466688 2775449600 2798387200 2857923200 2909885440 2998476800 3023257600 3052994560 3078225920 3200873984 3325583360 3358294016 3386048512 3489136640 3637356800 3658141696 3816243200 3838050304 3847782400 3869769728 4001092480 4156979200 4197867520 4232560640 4361420800 4397465600 4572677120 4655816704 4797562880 4837212160 4884791296 5001365600 5247334400 5290700800 5320933376 5550899200 5596774400 5715846400 5819770880 5996953600 6046515200 6105989120 6156451840 6401747968 6651166720 6716588032 6772097024 7274713600 7316283392 7632486400 7676100608 7695564800 8002184960 8313958400 8395735040 8465121280 8722841600 8794931200 9145354240 9311633408 9595125760 9674424320 10002731200 10494668800 10581401600 10641866752 11101798400 11431692800 11639541760 11993907200 12093030400 12211978240 12312903680 12803495936 13302333440 13433176064 13544194048 14549427200 14632566784 15264972800 15391129600 16004369920 16627916800 16791470080 16930242560 17445683200 18290708480 18623266816 19190251520 19348848640 20005462400 20989337600 21162803200 21283733504 22863385600 23279083520 23987814400 24186060800 24423956480 25606991872 26604666880 26866352128 27088388096 29098854400 29265133568 30529945600 30782259200 32008739840 33255833600 33582940160 33860485120 36581416960 37246533632 38380503040 40010924800 41978675200 42325606400 42567467008 45726771200 46558167040 47975628800 48372121600 51213983744 53209333760 53732704256 58197708800 58530267136 61059891200 61564518400 64017479680 66511667200 67165880320 67720970240 73162833920 74493067264 80021849600 83957350400 84651212800 91453542400 93116334080 95951257600 96744243200 102427967488 106418667520 116395417600 117060534272 122119782400 128034959360 133023334400 134331760640 135441940480 146325667840 148986134528 160043699200 167914700800 169302425600 182907084800 186232668160 191902515200 204855934976 212837335040 232790835200 234121068544 256069918720 266046668800 268663521280 292651335680 297972269056 320087398400 335829401600 338604851200 365814169600 372465336320 409711869952 465581670400 468242137088 512139837440 532093337600 585302671360 640174796800 671658803200 677209702400 731628339200 744930672640 819423739904 931163340800 1024279674880 1064186675200 1170605342720 1280349593600 1343317606400 1463256678400 1489861345280 1638847479808 1862326681600 2048559349760 2341210685440 2560699187200 2926513356800 3277694959616 3724653363200 4097118699520 5121398374400 5853026713600 7449306726400 8194237399040 10242796748800 11706053427200 16388474798080 20485593497600 40971186995200 81942373990400
• Sum of all divisors σ(n): 259659130566000
• Sum of proper divisors (its aliquot sum) s(n): 177716756575600
• 81942373990400 is an abundant number, because the sum of its proper divisors (177716756575600) is greater than itself. Its abundance is 95774382585200

Bases of 81942373990400

• Binary: 10010101000011010110010000110000000000000000000₂
• Hexadecimal: 0x4A86B2180000
• Base-36: T1NT1S8OW

Squares and roots of 81942373990400

• 81942373990400 squared (81942373990400²) is 6714552655182582419292160000
• 81942373990400 cubed (81942373990400³) is 550206384849204501397710198762635264000000
• The square root of 81942373990400 is 9052202.7148313465
• The cube root of 81942373990400 is 43434.6354348845

Scales and comparisons

• 81,942,373,990,400 seconds is equal to 2,605,514 years, 1 week, 3 days, 8 hours, 53 minutes, 20 seconds.
• To count from 1 to 81,942,373,990,400 would take you about six million, five hundred thirteen thousand, seven hundred eighty-five 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 81942373990400 cubic inches would be around 3619.6 feet tall.

Recreational maths with 81942373990400

• 81942373990400 backwards is 00409937324918
• The number of decimal digits it has is: 14
• The sum of 81942373990400's digits is 59
• More coming soon!