81185551356672

Names of 81185551356672

• Cardinal: 81185551356672 can be written as Eighty-one trillion, one hundred eighty-five billion, five hundred fifty-one million, three hundred fifty-six thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 8.1185551356672 × 10¹³

Factors of 81185551356672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 482

Divisors of 81185551356672

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 64 72 84 96 97 112 126 128 144 168 192 194 224 252 256 288 291 336 373 384 388 448 504 576 582 672 679 746 768 776 873 896 1008 1119 1152 1164 1344 1358 1492 1552 1746 1792 2016 2037 2238 2304 2328 2611 2688 2716 2984 3104 3357 3492 4032 4074 4476 4656 5222 5376 5432 5968 6111 6208 6714 6984 7833 8064 8148 8952 9312 10444 10864 11936 12222 12416 13428 13968 15666 16128 16296 17904 18624 20888 21728 23499 23872 24444 24832 26856 27936 31332 32592 35808 36181 37248 41776 43456 46998 47744 48888 53712 55872 62664 65184 71616 72362 74496 83552 86912 93996 95488 97776 107424 108543 111744 125328 130368 139129 143232 144724 167104 173824 187992 195552 214848 217086 223488 250656 253267 260736 278258 286464 289448 325629 334208 375984 391104 417387 429696 434172 501312 506534 521472 556516 578896 651258 668416 751968 759801 782208 834774 859392 868344 973903 1002624 1013068 1113032 1157792 1252161 1302516 1503936 1519602 1564416 1669548 1736688 1947806 2005248 2026136 2226064 2279403 2315584 2504322 2605032 2921709 3007872 3039204 3339096 3473376 3895612 4052272 4452128 4558806 4631168 5008644 5210064 5843418 6015744 6078408 6678192 6946752 7791224 8104544 8765127 8904256 9117612 9262336 10017288 10420128 11686836 12156816 13356384 13495513 13893504 15582448 16209088 17530254 17808512 18235224 20034576 20840256 23373672 24313632 26712768 26991026 27787008 31164896 32418176 35060508 35617024 36470448 40069152 40486539 41680512 46747344 48627264 51895117 53425536 53982052 62329792 64836352 70121016 72940896 80138304 80973078 83361024 93494688 94468591 97254528 103790234 106851072 107964104 121459617 124659584 140242032 145881792 155685351 160276608 161946156 186989376 188937182 194509056 207580468 215928208 242919234 249319168 280484064 283405773 291763584 311370702 320553216 323892312 363265819 373978752 377874364 415160936 431856416 467056053 485838468 560968128 566811546 583527168 622741404 647784624 726531638 747957504 755748728 830321872 850217319 863712832 934112106 971676936 1089797457 1121936256 1133623092 1245482808 1295569248 1453063276 1511497456 1660643744 1700434638 1727425664 1868224212 1943353872 2179594914 2243872512 2267246184 2490965616 2591138496 2906126552 3022994912 3269392371 3321287488 3400869276 3454851328 3736448424 3886707744 4359189828 4534492368 4981931232 5033826349 5182276992 5812253104 6045989824 6538784742 6642574976 6801738552 7472896848 7773415488 8718379656 9068984736 9963862464 10067652698 10364553984 11624506208 12091979648 13077569484 13285149952 13603477104 14945793696 15101479047 15546830976 17436759312 18137969472 19927724928 20135305396 23249012416 24183959296 26155138968 27206954208 29891587392 30202958094 31093661952 34873518624 35236784443 36275938944 39855449856 40270610792 45304437141 46498024832 52310277936 54413908416 59783174784 60405916188 69747037248 70473568886 72551877888 80541221584 90608874282 92996049664 104620555872 105710353329 108827816832 119566349568 120811832376 139494074496 140947137772 161082443168 181217748564 209241111744 211420706658 217655633664 241623664752 278988148992 281894275544 317131059987 322164886336 362435497128 418482223488 422841413316 483247329504 563788551088 634262119974 644329772672 724870994256 836964446976 845682826632 966494659008 1127577102176 1268524239948 1288659545344 1449741988512 1691365653264 1932989318016 2255154204352 2537048479896 2899483977024 3382731306528 3865978636032 4510308408704 5074096959792 5798967954048 6765462613056 9020616817408 10148193919584 11597935908096 13530925226112 20296387839168 27061850452224 40592775678336 81185551356672
• Sum of all divisors σ(n): 271002128837440
• Sum of proper divisors (its aliquot sum) s(n): 189816577480768
• 81185551356672 is an abundant number, because the sum of its proper divisors (189816577480768) is greater than itself. Its abundance is 108631026124096

Bases of 81185551356672

• Binary: 10010011101011001111011111100110001001100000000₂
• Hexadecimal: 0x49D67BF31300
• Base-36: SS04L4N40

Squares and roots of 81185551356672

• 81185551356672 squared (81185551356672²) is 6591093749086826819758915584
• 81185551356672 cubed (81185551356672³) is 535101580063128371878001944306578723176448
• The square root of 81185551356672 is 9010302.5119399849
• The cube root of 81185551356672 is 43300.5003536475

Scales and comparisons

• 81,185,551,356,672 seconds is equal to 2,581,449 years, 21 weeks, 2 days, 3 hours, 31 minutes, 12 seconds.
• To count from 1 to 81,185,551,356,672 would take you about six million, four hundred fifty-three thousand, six hundred twenty-three 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 81185551356672 cubic inches would be around 3608.4 feet tall.

Recreational maths with 81185551356672

• 81185551356672 backwards is 27665315558118
• 81185551356672 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81185551356672's digits is 63
• More coming soon!