81164073984

Names of 81164073984

• Cardinal: 81164073984 can be written as Eighty-one billion, one hundred sixty-four million, seventy-three thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 8.1164073984 × 10¹⁰

Factors of 81164073984

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 13632

Divisors of 81164073984

• Number of divisors d(n): 176
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 283 336 384 448 512 566 672 768 849 896 1024 1132 1344 1536 1698 1792 1981 2264 2688 3072 3396 3584 3962 4528 5376 5943 6792 7168 7924 9056 10752 11886 13337 13584 15848 18112 21504 23772 26674 27168 31696 36224 40011 47544 53348 54336 63392 72448 80022 93359 95088 106696 108672 126784 144896 160044 186718 190176 213392 217344 253568 280077 289792 320088 373436 380352 426784 434688 507136 560154 640176 746872 760704 853568 869376 1014272 1120308 1280352 1493744 1521408 1707136 2028544 2240616 2560704 2987488 3042816 3414272 3774371 4481232 5121408 5974976 6085632 6828544 7548742 8962464 10242816 11323113 11949952 13657088 15097484 17924928 20485632 22646226 23899904 26420597 30194968 35849856 40971264 45292452 47799808 52841194 60389936 71699712 79261791 90584904 95599616 105682388 120779872 143399424 158523582 181169808 211364776 241559744 286798848 317047164 362339616 422729552 483119488 634094328 724679232 845459104 966238976 1268188656 1449358464 1690918208 1932477952 2536377312 2898716928 3381836416 3864955904 5072754624 5797433856 6763672832 10145509248 11594867712 13527345664 20291018496 27054691328 40582036992 81164073984
• Sum of all divisors σ(n): 248128627968
• Sum of proper divisors (its aliquot sum) s(n): 166964553984
• 81164073984 is an abundant number, because the sum of its proper divisors (166964553984) is greater than itself. Its abundance is 85800480000

Bases of 81164073984

• Binary: 1001011100101110000010111110000000000₂
• Hexadecimal: 0x12E5C17C00
• Base-36: 11AAZSAO

Squares and roots of 81164073984

• 81164073984 squared (81164073984²) is 6587606905680225632256
• 81164073984 cubed (81164073984³) is 534677014270139143062239160827904
• The square root of 81164073984 is 284893.0922012677
• The cube root of 81164073984 is 4329.6681681535

Scales and comparisons

• 81,164,073,984 seconds is equal to 2,580 years, 39 weeks, 6 days, 6 minutes, 24 seconds.
• To count from 1 to 81,164,073,984 would take you about five thousand, one hundred sixty-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 81164073984 cubic inches would be around 360.8 feet tall.

Recreational maths with 81164073984

• 81164073984 backwards is 48937046118
• The number of decimal digits it has is: 11
• The sum of 81164073984's digits is 51
• More coming soon!