81801472627728

Names of 81801472627728

• Cardinal: 81801472627728 can be written as Eighty-one trillion, eight hundred one billion, four hundred seventy-two million, six hundred twenty-seven thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 8.1801472627728 × 10¹³

Factors of 81801472627728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1100

Divisors of 81801472627728

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 48 56 63 72 79 84 112 126 144 158 168 237 252 316 336 474 504 553 632 711 948 1008 1009 1106 1264 1422 1659 1896 2018 2212 2844 3027 3318 3792 4036 4424 4977 5688 6054 6636 7063 8072 8848 9081 9954 11376 12108 13272 14126 16144 18162 19908 21189 24216 26544 28252 36324 39816 42378 48432 56504 63567 72648 79632 79711 84756 113008 127134 145296 159422 169512 239133 254268 318844 339024 478266 508536 557977 637688 717399 956532 1017072 1018081 1115954 1275376 1434798 1673931 1913064 2036162 2231908 2869596 3054243 3347862 3826128 4072324 4463816 5021793 5739192 6108486 6695724 7126567 8144648 8927632 9162729 10043586 11478384 12216972 13391448 14253134 16289296 18325458 20087172 21379701 24433944 26782896 28506268 36650916 40174344 42759402 48867888 57012536 64139103 73301832 80348688 80428399 85518804 114025072 128278206 146603664 160856798 171037608 241285197 256556412 321713596 342075216 482570394 513112824 562998793 643427192 723855591 965140788 1026225648 1027243729 1125997586 1286854384 1447711182 1688996379 1930281576 2054487458 2251995172 2895422364 3081731187 3377992758 3860563152 4108974916 4503990344 5066989137 5790844728 6163462374 6755985516 7190706103 8217949832 9007980688 9245193561 10133978274 11581689456 12326924748 13511971032 14381412206 16435899664 18490387122 20267956548 21572118309 24653849496 27023942064 28762824412 36980774244 40535913096 43144236618 49307698992 57525648824 64716354927 73961548488 81071826192 81152254591 86288473236 115051297648 129432709854 147923096976 162304509182 172576946472 243456763773 258865419708 324609018364 345153892944 486913527546 517730839416 568065782137 649218036728 730370291319 973827055092 1035461678832 1136131564274 1298436073456 1460740582638 1704197346411 1947654110184 2272263128548 2921481165276 3408394692822 3895308220368 4544526257096 5112592039233 5842962330552 6816789385644 9089052514192 10225184078466 11685924661104 13633578771288 20450368156932 27267157542576 40900736313864 81801472627728
• Sum of all divisors σ(n): 265209546534400
• Sum of proper divisors (its aliquot sum) s(n): 183408073906672
• 81801472627728 is an abundant number, because the sum of its proper divisors (183408073906672) is greater than itself. Its abundance is 101606601278944

Bases of 81801472627728

• Binary: 10010100110010111100011101101111101010000010000₂
• Hexadecimal: 0x4A65E3B7D410
• Base-36: SZV2SR1G0

Squares and roots of 81801472627728

• 81801472627728 squared (81801472627728²) is 6691480924064933225274441984
• 81801472627728 cubed (81801472627728³) is 547372993648861698910589361904875365732352
• The square root of 81801472627728 is 9044416.6549163357
• The cube root of 81801472627728 is 43409.7256102833

Scales and comparisons

• 81,801,472,627,728 seconds is equal to 2,601,033 years, 41 weeks, 4 days, 13 hours, 28 minutes, 48 seconds.
• To count from 1 to 81,801,472,627,728 would take you about six million, five hundred two thousand, five hundred eighty-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 81801472627728 cubic inches would be around 3617.5 feet tall.

Recreational maths with 81801472627728

• 81801472627728 backwards is 82772627410818
• 81801472627728 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81801472627728's digits is 63
• More coming soon!