81264819152440

Names of 81264819152440

• Cardinal: 81264819152440 can be written as Eighty-one trillion, two hundred sixty-four billion, eight hundred nineteen million, one hundred fifty-two thousand, four hundred forty.

Scientific notation

• Scientific notation: 8.126481915244 × 10¹³

Factors of 81264819152440

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1741

Divisors of 81264819152440

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 20 22 28 35 40 44 55 56 61 70 71 77 88 110 121 122 140 142 154 220 242 244 280 284 305 308 355 385 427 440 484 488 497 521 568 605 610 616 671 710 770 781 847 854 968 994 1042 1063 1210 1220 1342 1420 1540 1562 1694 1708 1988 2084 2126 2135 2420 2440 2485 2605 2684 2840 3080 3124 3355 3388 3416 3647 3905 3976 4168 4235 4252 4270 4331 4697 4840 4970 5210 5315 5368 5467 5731 6248 6710 6776 7294 7381 7441 7810 8470 8504 8540 8591 8662 9394 9940 10420 10630 10934 11462 11693 13420 14588 14762 14882 15620 16940 17080 17182 17324 18235 18788 19880 20840 21260 21655 21868 22924 23386 23485 26840 27335 28655 29176 29524 29764 30317 31240 31781 33880 34364 34648 36470 36905 36991 37205 37576 40117 42520 42955 43310 43736 45848 46772 46970 47641 51667 54670 57310 58465 59048 59528 60137 60634 63041 63562 64843 68728 72940 73810 73982 74410 75473 80234 81851 85910 86620 93544 93940 95282 103334 109340 114620 116930 120274 121268 126082 127124 128623 129686 145880 147620 147964 148820 150946 151585 158905 160468 163702 171820 173240 184955 187880 190564 200585 206668 218680 222467 229240 233860 238205 240548 242536 252164 254248 257246 258335 258937 259372 295240 295928 297640 300685 301892 303170 315205 317810 320936 324215 327404 333487 343640 349591 369910 377365 381128 401170 406901 409255 413336 441287 444934 453901 467720 476410 481096 504328 514492 516670 517874 518744 524051 528311 553823 601370 603784 606340 630410 635620 643115 648430 654808 666974 699182 713273 739820 754730 802340 813802 818510 830203 882574 889868 900361 907802 952820 1028984 1033340 1035748 1048102 1056622 1107646 1112335 1202740 1212680 1260820 1271240 1286230 1294685 1296860 1333948 1398364 1426546 1479640 1509460 1604680 1627604 1637020 1660406 1667435 1747955 1765148 1779736 1800722 1815604 1905640 2034505 2066680 2071496 2096204 2113244 2206435 2215292 2224670 2256451 2269505 2405480 2447137 2521640 2572460 2589370 2593720 2620255 2641555 2667896 2769115 2796728 2848307 2853092 3018920 3255208 3274040 3320812 3334870 3495910 3530296 3566365 3601444 3631208 3668357 3845501 3876761 4069010 4151015 4192408 4226488 4412870 4430584 4449340 4475911 4501805 4512902 4539010 4603853 4894274 4992911 5144920 5178740 5240510 5283110 5538230 5696614 5706184 5811421 6092053 6641624 6669740 6991820 7132730 7202888 7336714 7691002 7753522 7846003 8138020 8302030 8825740 8898680 8951822 9003610 9025804 9078020 9132233 9207706 9788548 9985822 10357480 10481020 10566220 11076460 11282255 11393228 11622842 12184106 12235685 13339480 13983640 14241535 14265460 14673428 15382004 15507044 15692006 15795157 16276040 16604060 17651480 17903644 18007220 18051608 18156040 18264466 18341785 18415412 19227505 19383805 19577096 19971644 20962040 21132440 22152920 22379555 22564510 22786456 23019265 23245684 24368212 24471370 24820961 24964555 26918507 28483070 28530920 29057105 29346856 30460265 30764008 31014088 31331377 31384012 31590314 32226971 33208120 33783203 35807288 36014440 36528932 36683570 36830824 38455010 38767610 39230015 39321433 39943288 42644371 44759110 45129020 45661165 46038530 46491368 48736424 48942740 49641922 49929110 50642383 53837014 54922021 56966140 58114210 60920530 62662754 62768024 63180628 63925631 64453942 67012583 67566406 73057864 73367140 76910020 77535220 78460030 78642866 78975785 85288742 89518220 90258040 91322330 92077060 97885480 99283844 99858220 101284766 107674028 109844042 113932280 116228420 121841060 124104805 125325508 126361256 127851262 128907884 134025166 134592535 135132812 146734280 153820040 155070440 156656885 156920060 157285732 157951570 161134855 168916015 170577484 173746727 179036440 182644660 184154120 196607165 198567688 199716440 202569532 213221855 215348056 219688084 232456840 236482421 243682120 248209610 250651016 253211915 255702524 257815768 268050332 269185070 270265624 273030571 274610105 275250031 313313770 313840120 314571464 315903140 319628155 322269710 335062915 337832030 341154968 347493454 354496681 365289320 371615233 393214330 405139064 426443710 432535763 439376168 469088081 472964842 496419220 506423830 511405048 536100664 538370140 546061142 549220210 550500062 557066213 626627540 631806280 639256310 644539420 670125830 675664060 694986908 708993362 743230466 786428660 852887420 865071526 868733635 938176162 945929684 992838440 1012847660 1076740280 1092122284 1098440420 1101000124 1114132426 1182412105 1253255080 1278512620 1289078840 1340251660 1351328120 1365152855 1376250155 1389973816 1417986724 1486460932 1572857320 1705774840 1730143052 1737467270 1772483405 1858076165 1876352324 1891859368 1911213997 2025695320 2162678815 2184244568 2196880840 2202000248 2228264852 2345440405 2364824210 2398607413 2557025240 2601306631 2680503320 2730305710 2752500310 2785331065 2835973448 2972921864 3027750341 3460286104 3474934540 3544966810 3716152330 3752704648 3822427994 3899463491 4087767563 4325357630 4456529704 4690880810 4729648420 4757893393 4797214826 5202613262 5460611420 5505000620 5570662130 6055500682 6949869080 7089933620 7432304660 7644855988 7798926982 8175535126 8650715260 9381761620 9459296840 9515786786 9556069985 9594429652 10405226524 10921222840 11010001240 11141324260 11993037065 12111001364 13006533155 14179867240 14864609320 15138751705 15289711976 15597853964 16351070252 16790251891 17301430520 18763523240 19031573572 19112139970 19188859304 19497317455 20438837815 20810453048 22282648520 23789466965 23986074130 24222002728 26013066310 26384681543 28614372941 30277503410 31195707928 32702140504 33305253751 33580503782 38063147144 38224279940 38994634910 40877675630 47578933930 47972148260 52026132620 52769363086 57228745882 60555006820 66610507502 67161007564 76448559880 77989269820 81755351260 83951259455 95157867860 95944296520 104052265240 105538726172 114457491764 121110013640 131923407715 133221015004 134322015128 143071864705 155978539640 163510702520 166526268755 167902518910 184692770801 190315735720 211077452344 228914983528 263846815430 266442030008 286143729410 290231496973 333052537510 335805037820 369385541602 527693630860 572287458820 580462993946 666105075020 671610075640 738771083204 923463854005 1055387261720 1144574917640 1160925987892 1332210150040 1451157484865 1477542166408 1846927708010 2031620478811 2321851975784 2902314969730 3693855416020 4063240957622 5804629939460 7387710832040 8126481915244 10158102394055 11609259878920 16252963830488 20316204788110 40632409576220 81264819152440
• Sum of all divisors σ(n): 237421724037120
• Sum of proper divisors (its aliquot sum) s(n): 156156904884680
• 81264819152440 is an abundant number, because the sum of its proper divisors (156156904884680) is greater than itself. Its abundance is 74892085732240

Bases of 81264819152440

• Binary: 10010011110100011110000101011011010011000111000₂
• Hexadecimal: 0x49E8F0ADA638
• Base-36: ST0JJ4LRS

Squares and roots of 81264819152440

• 81264819152440 squared (81264819152440²) is 6603970831878779039957953600
• 81264819152440 cubed (81264819152440³) is 536670495340617722234777943765588846784000
• The square root of 81264819152440 is 9014700.1698581191
• The cube root of 81264819152440 is 43314.5883232483

Scales and comparisons

• 81,264,819,152,440 seconds is equal to 2,583,969 years, 45 weeks, 5 days, 11 hours, 40 minutes, 40 seconds.
• To count from 1 to 81,264,819,152,440 would take you about six million, four hundred fifty-nine thousand, nine hundred twenty-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 81264819152440 cubic inches would be around 3609.5 feet tall.

Recreational maths with 81264819152440

• 81264819152440 backwards is 04425191846218
• 81264819152440 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81264819152440's digits is 55
• More coming soon!