81972940224448

Names of 81972940224448

• Cardinal: 81972940224448 can be written as Eighty-one trillion, nine hundred seventy-two billion, nine hundred forty million, two hundred twenty-four thousand, four hundred forty-eight.

Scientific notation

• Scientific notation: 8.1972940224448 × 10¹³

Factors of 81972940224448

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 565

Divisors of 81972940224448

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 52 56 64 73 91 97 104 112 146 182 194 208 224 292 364 373 388 416 448 511 584 679 728 746 776 832 949 1022 1168 1261 1358 1456 1492 1552 1898 2044 2336 2522 2611 2716 2912 2984 3104 3796 4088 4672 4849 5044 5222 5329 5432 5824 5968 6208 6643 7081 7592 8176 8827 9698 10088 10444 10658 10864 11936 13286 14162 15184 16352 17654 19396 20176 20888 21316 21728 23872 26572 27229 28324 30368 32704 33943 35308 36181 37303 38792 40352 41776 42632 43456 49567 53144 54458 56648 60736 67886 69277 70616 72362 74606 77584 80704 83552 85264 92053 99134 106288 108916 113296 135772 138554 141232 144724 149212 155168 167104 170528 184106 190603 198268 212576 217832 226592 253267 271544 277108 282464 289448 298424 310336 341056 353977 368212 381206 389017 396536 425152 435664 453184 470353 484939 506534 516913 543088 554216 564928 578896 596848 644371 707954 736424 762412 778034 793072 871328 940706 969878 1013068 1033826 1086176 1108432 1157792 1193696 1288742 1415908 1472848 1524824 1556068 1586144 1742656 1881412 1939756 1987717 2026136 2067652 2172352 2216864 2315584 2387392 2477839 2577484 2641213 2723119 2831816 2945696 3049648 3112136 3172288 3292471 3618391 3762824 3879512 3975434 4052272 4135304 4433728 4955678 5057221 5154968 5282426 5446238 5663632 5891392 6099296 6224272 6584942 6719869 7236782 7525648 7759024 7950868 8104544 8270608 9911356 10114442 10309936 10564852 10892476 11327264 12198592 12448544 13169884 13439738 13914019 14473564 15051296 15518048 15901736 16209088 16541216 18488491 19822712 20228884 20619872 21129704 21784952 22654528 24897088 25840321 26339768 26879476 27828038 28947128 30102592 31036096 31803472 33082432 34335769 35400547 36976982 37734649 39645424 40457768 41239744 42259408 43569904 47039083 51680642 52679536 53758952 55656076 57894256 63606944 68671538 70801094 73953964 75469298 79290848 80915536 84518816 87139808 94078166 103361284 105359072 107517904 111312152 115788512 127213888 137343076 141602188 145103341 147907928 150938596 158581696 161831072 169037632 174279616 180882247 188156332 192808549 206722568 210718144 215035808 222624304 231577024 240350383 264142543 274686152 283204376 290206682 295815856 301877192 323662144 361764494 376312664 385617098 413445136 430071616 445248608 480700766 490550437 528285086 549372304 566408752 580413364 591631712 603754384 723528988 752625328 771234196 826890272 890497216 961401532 981100874 1015723387 1056570172 1098744608 1132817504 1160826728 1183263424 1207508768 1349659843 1447057976 1505250656 1542468392 1653780544 1886343433 1922803064 1962201748 2031446774 2113140344 2197489216 2265635008 2321653456 2415017536 2506511137 2699319686 2894115952 3010501312 3084936784 3433853059 3772686866 3845606128 3924403496 4062893548 4226280688 4643306912 5013022274 5398639372 5788231904 6169873568 6867706118 7545373732 7691212256 7848806992 8125787096 8452561376 9286613824 10026044548 10797278744 11576463808 12339747136 13204404031 13735412236 14075024077 15090747464 15382424512 15697613984 16251574192 16905122752 17545577959 20052089096 21594557488 26408808062 27470824472 28150048154 30181494928 31395227968 32503148384 35091155918 40104178192 43189114976 52817616124 54941648944 56300096308 60362989856 65006296768 70182311836 80208356384 86378229952 98525168539 105635232248 109883297888 112600192616 120725979712 140364623672 160416712768 182975313001 197050337078 211270464496 219766595776 225200385232 280729247344 365950626002 394100674156 422540928992 450400770464 561458494688 731901252004 788201348312 845081857984 900801540928 1122916989376 1280827191007 1463802504008 1576402696624 2561654382014 2927605008016 3152805393248 5123308764028 5855210016032 6305610786496 10246617528056 11710420032064 20493235056112 40986470112224 81972940224448
• Sum of all divisors σ(n): 205626152892160
• Sum of proper divisors (its aliquot sum) s(n): 123653212667712
• 81972940224448 is an abundant number, because the sum of its proper divisors (123653212667712) is greater than itself. Its abundance is 41680272443264

Bases of 81972940224448

• Binary: 10010101000110111001111111110111011011111000000₂
• Hexadecimal: 0x4A8DCFFBB7C0
• Base-36: T21UK4PTS

Squares and roots of 81972940224448

• 81972940224448 squared (81972940224448²) is 6719562929040924924616904704
• 81972940224448 cubed (81972940224448³) is 550822330316688456687503569767124787003392
• The square root of 81972940224448 is 9053890.8886979635
• The cube root of 81972940224448 is 43440.0354419205

Scales and comparisons

• 81,972,940,224,448 seconds is equal to 2,606,485 years, 48 weeks, 6 days, 5 hours, 27 minutes, 28 seconds.
• To count from 1 to 81,972,940,224,448 would take you about six million, five hundred sixteen thousand, two hundred fourteen 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 81972940224448 cubic inches would be around 3620 feet tall.

Recreational maths with 81972940224448

• 81972940224448 backwards is 84442204927918
• 81972940224448 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81972940224448's digits is 64
• More coming soon!