81555016704

Names of 81555016704

• Cardinal: 81555016704 can be written as Eighty-one billion, five hundred fifty-five million, sixteen thousand, seven hundred four.

Scientific notation

• Scientific notation: 8.1555016704 × 10¹⁰

Factors of 81555016704

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 11069

Divisors of 81555016704

• Number of divisors d(n): 220
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 49 56 64 84 96 98 112 128 147 168 192 196 224 256 294 336 343 384 392 448 512 588 672 686 768 784 896 1024 1029 1176 1344 1372 1536 1568 1792 2058 2352 2401 2688 2744 3072 3136 3584 4116 4704 4802 5376 5488 6272 7168 7203 8232 9408 9604 10752 10976 11057 12544 14406 16464 18816 19208 21504 21952 22114 25088 28812 32928 33171 37632 38416 43904 44228 50176 57624 65856 66342 75264 76832 77399 87808 88456 115248 131712 132684 150528 153664 154798 175616 176912 230496 232197 263424 265368 307328 309596 351232 353824 460992 464394 526848 530736 541793 614656 619192 707648 921984 928788 1053696 1061472 1083586 1229312 1238384 1415296 1625379 1843968 1857576 2122944 2167172 2458624 2476768 2830592 3250758 3687936 3715152 3792551 4245888 4334344 4953536 5661184 6501516 7375872 7430304 7585102 8491776 8668688 9907072 11322368 11377653 13003032 14860608 15170204 16983552 17337376 19814144 22755306 26006064 26547857 29721216 30340408 33967104 34674752 39628288 45510612 52012128 53095714 59442432 60680816 69349504 79256576 79643571 91021224 104024256 106191428 118884864 121361632 138699008 159287142 182042448 208048512 212382856 237769728 242723264 277398016 318574284 364084896 416097024 424765712 485446528 554796032 637148568 728169792 832194048 849531424 970893056 1274297136 1456339584 1664388096 1699062848 1941786112 2548594272 2912679168 3398125696 3883572224 5097188544 5825358336 6796251392 10194377088 11650716672 13592502784 20388754176 27185005568 40777508352 81555016704
• Sum of all divisors σ(n): 253610674104
• Sum of proper divisors (its aliquot sum) s(n): 172055657400
• 81555016704 is an abundant number, because the sum of its proper divisors (172055657400) is greater than itself. Its abundance is 90500640696

Bases of 81555016704

• Binary: 1001011111101000011101100110000000000₂
• Hexadecimal: 0x12FD0ECC00
• Base-36: 11GRR1MO

Squares and roots of 81555016704

• 81555016704 squared (81555016704²) is 6651220749589719023616
• 81555016704 cubed (81555016704³) is 542440419334780936117669450481664
• The square root of 81555016704 is 285578.3897706547
• The cube root of 81555016704 is 4336.6086027255

Scales and comparisons

• 81,555,016,704 seconds is equal to 2,593 years, 10 weeks, 1 day, 19 hours, 18 minutes, 24 seconds.
• To count from 1 to 81,555,016,704 would take you about five thousand, one hundred eighty-six 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 81555016704 cubic inches would be around 361.4 feet tall.

Recreational maths with 81555016704

• 81555016704 backwards is 40761055518
• 81555016704 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81555016704's digits is 42
• More coming soon!