81322862768

Names of 81322862768

• Cardinal: 81322862768 can be written as Eighty-one billion, three hundred twenty-two million, eight hundred sixty-two thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 8.1322862768 × 10¹⁰

Factors of 81322862768

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3442

Divisors of 81322862768

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 7 8 14 16 19 28 38 56 76 112 133 152 266 304 361 532 722 757 1064 1444 1514 2128 2527 2657 2888 3028 5054 5299 5314 5776 6056 10108 10598 10628 12112 14383 18599 20216 21196 21256 28766 37198 40432 42392 42512 50483 57532 74396 84784 100681 100966 115064 148792 201362 201932 230128 273277 297584 353381 402724 403864 546554 706762 805448 807728 959177 1093108 1413524 1610896 1912939 1918354 2011349 2186216 2827048 3825878 3836708 4022698 4372432 5654096 6714239 7651756 7673416 8045396 13428478 14079443 15303512 15346832 16090792 26856956 28158886 30607024 32181584 38215631 53713912 56317772 76431262 107427824 112635544 152862524 225271088 267509417 305725048 535018834 611450096 726096989 1070037668 1452193978 2140075336 2904387956 4280150672 5082678923 5808775912 10165357846 11617551824 20330715692 40661431384 81322862768
• Sum of all divisors σ(n): 190371020832
• Sum of proper divisors (its aliquot sum) s(n): 109048158064
• 81322862768 is an abundant number, because the sum of its proper divisors (109048158064) is greater than itself. Its abundance is 27725295296

Bases of 81322862768

• Binary: 1001011101111001110000110100010110000₂
• Hexadecimal: 0x12EF3868B0
• Base-36: 11CXJ6I8

Squares and roots of 81322862768

• 81322862768 squared (81322862768²) is 6613408008782960621824
• 81322862768 cubed (81322862768³) is 537821271927048845345341097848832
• The square root of 81322862768 is 285171.6373835239
• The cube root of 81322862768 is 4332.4898389361

Scales and comparisons

• 81,322,862,768 seconds is equal to 2,585 years, 42 weeks, 2 days, 20 hours, 6 minutes, 8 seconds.
• To count from 1 to 81,322,862,768 would take you about five thousand, one hundred seventy-one 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 81322862768 cubic inches would be around 361 feet tall.

Recreational maths with 81322862768

• 81322862768 backwards is 86726822318
• The number of decimal digits it has is: 11
• The sum of 81322862768's digits is 53
• More coming soon!