81438741541794

Names of 81438741541794

• Cardinal: 81438741541794 can be written as Eighty-one trillion, four hundred thirty-eight billion, seven hundred forty-one million, five hundred forty-one thousand, seven hundred ninety-four.

Scientific notation

• Scientific notation: 8.1438741541794 × 10¹³

Factors of 81438741541794

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1447

Divisors of 81438741541794

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 6 7 13 14 21 26 39 42 49 78 91 98 147 163 169 182 273 294 326 338 343 489 507 546 637 686 978 1014 1029 1141 1183 1259 1274 1911 2058 2119 2282 2366 2401 2518 3423 3549 3777 3822 4238 4459 4802 6357 6846 7098 7203 7554 7987 8281 8813 8918 12714 13377 14406 14833 15974 16367 16562 17626 23961 24843 26439 26569 26754 27547 29666 31213 32734 44499 47922 49101 49686 52878 53138 55094 55909 57967 61691 62426 79707 82641 88998 93639 98202 103831 111818 114569 115934 123382 159414 165282 167727 173901 185073 185983 187278 192829 205217 207662 212771 229138 311493 335454 343707 345397 347802 370146 371966 385658 391363 405769 410434 425542 431837 557949 578487 615651 622986 638313 687414 690794 726817 782726 801983 811538 863674 1036191 1115898 1156974 1174089 1217307 1231302 1276626 1295511 1301881 1349803 1436519 1453634 1489397 1603966 2072382 2180451 2348178 2405949 2417779 2434614 2591022 2603762 2667821 2699606 2873038 2978794 3022859 3905643 4049409 4309557 4360902 4468191 4490161 4811898 4835558 5087719 5335642 5613881 6045718 7253337 7811286 8003463 8098818 8619114 8936382 8980322 9068577 9113167 9448621 10055633 10175438 10425779 11227762 13470483 14506674 15263157 16006926 16841643 16924453 18137154 18226334 18674747 18897242 20111266 20851558 26940966 27339501 28345863 30166899 30526314 31277337 31431127 33450371 33683286 33848906 34681673 37349494 39297167 50773359 54679002 56024241 56691726 60333798 62554674 62862254 63792169 66140347 66900742 69363346 70389431 72980453 78594334 94293381 100351113 101546718 104045019 112048482 117891501 118471171 127584338 130723229 132280694 140778862 145960906 188586762 191376507 198421041 200702226 208090038 211168293 218941359 220017889 234152597 235783002 236942342 242771711 261446458 355413513 382753014 392169687 396842082 422336586 434854823 437882718 440035778 468305194 485543422 492726017 510863171 660053667 702457791 710827026 728315133 784339374 829298197 869709646 915062603 985452034 1021726342 1304564469 1320107334 1404915582 1456630266 1478178051 1532589513 1540125223 1639068179 1658596394 1699401977 1830125206 2487894591 2609128938 2745187809 2956356102 3043983761 3065179026 3080250446 3278136358 3398803954 4620375669 4917204537 4975789182 5098205931 5490375618 5653112699 6087967522 6405438221 9131951283 9240751338 9834409074 10196411862 10780876561 11306225398 11473477253 11895813839 12810876442 16959338097 18263902566 19216314663 21307886327 21561753122 22946954506 23791627678 32342629683 33918676194 34420431759 35687441517 38432629326 39571788893 42615772654 63923658981 64685259366 68840863518 71374883034 79143577786 80314340771 83270696873 118715366679 127847317962 149155204289 160628681542 166541393746 237430733358 240943022313 249812090619 277002522251 298310408578 447465612867 481886044626 499624181238 554005044502 831007566753 894931225734 1044086430023 1662015133506 1939017655757 2088172860046 3132259290069 3878035311514 5817052967271 6264518580138 11634105934542 13573123590299 27146247180598 40719370770897 81438741541794
• Sum of all divisors σ(n): 207187565845680
• Sum of proper divisors (its aliquot sum) s(n): 125748824303886
• 81438741541794 is an abundant number, because the sum of its proper divisors (125748824303886) is greater than itself. Its abundance is 44310082762092

Bases of 81438741541794

• Binary: 10010100001000101101111010000101011001110100010₂
• Hexadecimal: 0x4A116F42B3A2
• Base-36: SV8FW109U

Squares and roots of 81438741541794

• 81438741541794 squared (81438741541794²) is 6632268623911123776248738436
• 81438741541794 cubed (81438741541794³) is 540123610298447763056166356295058068194184
• The square root of 81438741541794 is 9024341.6126493129
• The cube root of 81438741541794 is 43345.4668299271

Scales and comparisons

• 81,438,741,541,794 seconds is equal to 2,589,500 years, 3 weeks, 6 days, 2 hours, 29 minutes, 54 seconds.
• To count from 1 to 81,438,741,541,794 would take you about six million, four hundred seventy-three thousand, seven hundred fifty 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 81438741541794 cubic inches would be around 3612.1 feet tall.

Recreational maths with 81438741541794

• 81438741541794 backwards is 49714514783418
• The number of decimal digits it has is: 14
• The sum of 81438741541794's digits is 66
• More coming soon!