81631424675840

Names of 81631424675840

• Cardinal: 81631424675840 can be written as Eighty-one trillion, six hundred thirty-one billion, four hundred twenty-four million, six hundred seventy-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 8.163142467584 × 10¹³

Factors of 81631424675840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 11442

Divisors of 81631424675840

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 29 32 40 52 58 64 65 80 104 116 128 130 145 160 208 232 256 260 290 320 377 416 464 512 520 580 640 754 832 841 928 1024 1040 1160 1280 1508 1664 1682 1856 1885 2048 2080 2320 2560 3016 3328 3364 3712 3770 4096 4160 4205 4640 5120 6032 6656 6728 7424 7540 8192 8320 8410 9280 10240 10933 11393 12064 13312 13456 14848 15080 16384 16640 16820 18560 20480 21866 22786 24128 26624 26912 29696 30160 32768 33280 33640 37120 40960 43732 45572 48256 53248 53824 54665 56965 59392 60320 65536 66560 67280 74240 81920 87464 91144 96512 106496 107648 109330 113930 118784 120640 131072 133120 134560 148109 148480 163840 174928 182288 193024 212992 215296 218660 227860 237568 241280 266240 269120 296218 296960 327680 330397 349856 364576 386048 425984 430592 437320 455720 475136 482560 532480 538240 592436 593920 655360 660794 699712 729152 740545 772096 851968 861184 874640 911440 950272 965120 1064960 1076480 1184872 1187840 1321588 1399424 1458304 1481090 1544192 1651985 1703936 1722368 1749280 1822880 1900544 1930240 2129920 2152960 2369744 2375680 2643176 2798848 2916608 2962180 3088384 3303970 3444736 3498560 3645760 3801088 3860480 4259840 4295161 4305920 4739488 4751360 5286352 5597696 5833216 5924360 6176768 6607940 6889472 6997120 7291520 7720960 8519680 8590322 8611840 9478976 9502720 9581513 10572704 11195392 11666432 11848720 12353536 13215880 13778944 13994240 14583040 15441920 17180644 17223680 18957952 19005440 19163026 21145408 21475805 22390784 23332864 23697440 24707072 26431760 27557888 27988480 29166080 30883840 34361288 34447360 37915904 38326052 42290816 42951610 44781568 46665728 47394880 47907565 49414144 52863520 55115776 55976960 58332160 61767680 68722576 68894720 75831808 76652104 84581632 85903220 89563136 93331456 94789760 95815130 105727040 110231552 111953920 116664320 123535360 124559669 137445152 137789440 151663616 153304208 169163264 171806440 179126272 186662912 189579520 191630260 211454080 223907840 233328640 247070720 249119338 274890304 275578880 303327232 306608416 338326528 343612880 358252544 373325824 379159040 383260520 422908160 447815680 466657280 498238676 549780608 551157760 606654464 613216832 622798345 676653056 687225760 716505088 746651648 758318080 766521040 845816320 895631360 933314560 996477352 1099561216 1213308928 1226433664 1245596690 1353306112 1374451520 1433010176 1493303296 1516636160 1533042080 1691632640 1791262720 1866629120 1992954704 2199122432 2426617856 2452867328 2491193380 2706612224 2748903040 3033272320 3066084160 3383265280 3582525440 3733258240 3985909408 4398244864 4853235712 4905734656 4982386760 5413224448 5497806080 6066544640 6132168320 6766530560 7165050880 7466516480 7971818816 8796489728 9706471424 9811469312 9964773520 10826448896 10995612160 12133089280 12264336640 13533061120 15943637632 17592979456 19412942848 19622938624 19929547040 21652897792 21991224320 24266178560 24528673280 27066122240 31887275264 35185958912 39245877248 39859094080 43305795584 43982448640 48532357120 49057346560 54132244480 63774550528 70371917824 78491754496 79718188160 87964897280 97064714240 98114693120 108264488960 127549101056 140743835648 156983508992 159436376320 175929794560 196229386240 216528977920 255098202112 281487671296 313967017984 318872752640 351859589120 392458772480 510196404224 562975342592 627934035968 637745505280 703719178240 784917544960 1020392808448 1255868071936 1275491010560 1407438356480 1569835089920 2040785616896 2550982021120 2814876712960 3139670179840 4081571233792 5101964042240 6279340359680 8163142467584 10203928084480 16326284935168 20407856168960 40815712337920 81631424675840
• Sum of all divisors σ(n): 218530430570088
• Sum of proper divisors (its aliquot sum) s(n): 136899005894248
• 81631424675840 is an abundant number, because the sum of its proper divisors (136899005894248) is greater than itself. Its abundance is 55267581218408

Bases of 81631424675840

• Binary: 10010100011111001001100000100100000000000000000₂
• Hexadecimal: 0x4A3E4C120000
• Base-36: SXOYILA0W

Squares and roots of 81631424675840

• 81631424675840 squared (81631424675840²) is 6663689494607339649079705600
• 81631424675840 cubed (81631424675840³) is 543966467042225364441461086062802632704000
• The square root of 81631424675840 is 9035011.0501227391
• The cube root of 81631424675840 is 43379.6248650203

Scales and comparisons

• 81,631,424,675,840 seconds is equal to 2,595,626 years, 41 weeks, 4 days, 23 hours, 17 minutes, 20 seconds.
• To count from 1 to 81,631,424,675,840 would take you about six million, four hundred eighty-nine thousand and sixty-seven 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 81631424675840 cubic inches would be around 3615 feet tall.

Recreational maths with 81631424675840

• 81631424675840 backwards is 04857642413618
• The number of decimal digits it has is: 14
• The sum of 81631424675840's digits is 59
• More coming soon!