81329027956662728

Names of 81329027956662728

• Cardinal: 81329027956662728 can be written as Eighty-one quadrillion, three hundred twenty-nine trillion, twenty-seven billion, nine hundred fifty-six million, six hundred sixty-two thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 8.1329027956662728 × 10¹⁶

Factors of 81329027956662728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 17454

Divisors of 81329027956662728

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 4 8 11 17 22 31 34 44 62 68 88 121 124 136 187 242 248 289 341 374 484 527 578 682 748 961 968 1054 1156 1364 1496 1922 2057 2108 2312 2728 3179 3751 3844 4114 4216 5797 6358 7502 7688 8228 8959 10571 11594 12716 15004 16337 16456 17393 17918 21142 23188 25432 30008 32674 34786 34969 35836 42284 46376 63767 65348 69572 69938 71672 84568 98549 116281 127534 130696 139144 139876 179707 191323 197098 232562 255068 277729 279752 295681 359414 382646 394196 465124 510136 539183 555458 591362 718828 765292 788392 930248 1078366 1084039 1110916 1182724 1437656 1530584 1976777 2104553 2156732 2168078 2221832 2365448 3055019 3252491 3953554 4209106 4313464 4336156 5026577 5931013 6110038 6504982 7907108 8418212 8672312 9166111 10053154 11862026 12220076 13009964 15814216 16714673 16836424 18332222 20106308 23724052 24440152 26019928 33429346 33605209 35777401 36664444 40212616 47448104 55292347 65241143 66858692 67210418 71554802 73328888 100827221 110584694 130482286 133717384 134420836 143109604 155823887 183861403 201654442 221169388 260964572 268841672 284149441 286219208 302516449 311647774 367722806 403308884 442338776 521929144 568298882 605032898 608215817 623295548 735445612 806617768 1109099431 1136597764 1210065796 1216431634 1246591096 1470891224 1714062757 2022475433 2218198862 2273195528 2420131592 2432863268 3125643851 3327680939 3428125514 4044950866 4436397724 4830540497 4865726536 5142779633 6251287702 6655361878 6856251028 8089901732 8872795448 9378009919 9661080994 10285559266 12502575404 13310723756 13712502056 16179803464 18756019838 18854690327 19322161988 20571118532 25005150808 26621447512 34382082361 36604490329 37512039676 37709380654 38644323976 41142237064 53135945467 56570575963 68764164722 73208980658 75024079352 75418761308 87427253761 103158109109 106271890934 113141151926 137528329444 146417961316 150837522616 159426168623 174854507522 206316218218 212543781868 226282303852 275056658888 290718307489 292835922632 318852337246 349709015044 412632436436 425087563736 452564607704 581436614978 584495400137 622276335593 637704674492 699418030088 825264872872 961699791371 1134739200199 1162873229956 1168990800274 1244552671186 1275409348984 1753687854853 1923399582742 2269478400398 2325746459912 2337981600548 2489105342372 2710244866591 3197901382379 3507375709706 3846799165484 4538956800796 4675963201096 4942211227313 4978210684744 5420489733182 6395802764758 7014751419412 7693598330968 9077913601592 9884422454626 10578697705081 10840979466364 12791605529516 14029502838824 19290566403383 19768844909252 21157395410162 21681958932728 25583211059032 29812693532501 35176915206169 38581132806766 39537689818504 42314790820324 54364323500443 59625387065002 70353830412338 77162265613532 84017590864321 84629581640648 108728647000886 119250774130004 140707660824676 154324531227064 168035181728642 217457294001772 238501548260008 281415321649352 327939628857511 336070363457284 434914588003544 598007558504873 655879257715022 672140726914568 924193499507531 1196015117009746 1311758515430044 1848386999015062 2392030234019492 2623517030860088 3696773998030124 4784060468038984 7393547996060248 10166128494582841 20332256989165682 40664513978331364 81329027956662728
• Sum of all divisors σ(n): 183994350421924035
• Sum of proper divisors (its aliquot sum) s(n): 102665322465261307
• 81329027956662728 is an abundant number, because the sum of its proper divisors (102665322465261307) is greater than itself. Its abundance is 21336294508598579

Bases of 81329027956662728

• Binary: 100100000111100000101000111101101010010001110000111001000₂
• Hexadecimal: 0x120F051ED48E1C8
• Base-36: M8SQFNK4EDK

Squares and roots of 81329027956662728

• 81329027956662728 squared (81329027956662728²) is 6614410788375627586014887144401984
• 81329027956662728 cubed (81329027956662728³) is 537943599924652971005008154118078439765299942052352
• The square root of 81329027956662728 is 285182446.7891786779
• The cube root of 81329027956662728 is 433259.9320006803

Scales and comparisons

• 81,329,027,956,662,728 seconds is equal to 2,586,011,521 years, 42 weeks, 4 days, 20 hours, 32 minutes, 8 seconds.
• To count from 1 to 81,329,027,956,662,728 would take you about seven billion, seven hundred fifty-eight million, thirty-four thousand, five hundred sixty-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 81329027956662728 cubic inches would be around 36105 feet tall.

Recreational maths with 81329027956662728

• 81329027956662728 backwards is 82726665972092318
• The number of decimal digits it has is: 17
• The sum of 81329027956662728's digits is 83
• More coming soon!