81845840268012744

Names of 81845840268012744

• Cardinal: 81845840268012744 can be written as Eighty-one quadrillion, eight hundred forty-five trillion, eight hundred forty billion, two hundred sixty-eight million, twelve thousand, seven hundred forty-four.

Scientific notation

• Scientific notation: 8.1845840268012744 × 10¹⁶

Factors of 81845840268012744

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 14762958201324

Divisors of 81845840268012744

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 28 33 36 42 44 56 63 66 72 77 84 88 99 126 132 154 168 198 231 252 264 308 396 462 504 616 693 792 924 1386 1848 2772 5544 14762958201301 29525916402602 44288874603903 59051832805204 88577749207806 103340707409107 118103665610408 132866623811709 162392540214311 177155498415612 206681414818214 265733247623418 310022122227321 324785080428622 354310996831224 413362829636428 487177620642933 531466495246836 620044244454642 649570160857244 826725659272856 930066366681963 974355241285866 1062932990493672 1136747781500177 1240088488909284 1299140321714488 1461532861928799 1860132733363926 1948710482571732 2273495563000354 2480176977818568 2923065723857598 3410243344500531 3720265466727852 3897420965143464 4546991126000708 5846131447715196 6820486689001062 7440530933455704 9093982252001416 10230730033501593 11692262895430392 13640973378002124 20461460067003186 27281946756004248 40922920134006372 81845840268012744
• Sum of all divisors σ(n): 276362577528373440
• Sum of proper divisors (its aliquot sum) s(n): 194516737260360696
• 81845840268012744 is an abundant number, because the sum of its proper divisors (194516737260360696) is greater than itself. Its abundance is 112670896992347952

Bases of 81845840268012744

• Binary: 100100010110001100101101110101011100001001010110011001000₂
• Hexadecimal: 0x122C65BAB84ACC8
• Base-36: MDVXFYALNM0

Squares and roots of 81845840268012744

• 81845840268012744 squared (81845840268012744²) is 6698741569177056398600750946409536
• 81845840268012744 cubed (81845840268012744³) is 548264132467562398972861993071428479538056691126784
• The square root of 81845840268012744 is 286087120.0666201681
• The cube root of 81845840268012744 is 434175.7240866367

Scales and comparisons

• 81,845,840,268,012,744 seconds is equal to 2,602,444,554 years, 37 weeks, 1 day, 19 hours, 32 minutes, 24 seconds.
• To count from 1 to 81,845,840,268,012,744 would take you about seven billion, eight hundred seven million, three hundred thirty-three thousand, six hundred sixty-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 81845840268012744 cubic inches would be around 36181.3 feet tall.

Recreational maths with 81845840268012744

• 81845840268012744 backwards is 44721086204854818
• 81845840268012744 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 81845840268012744's digits is 72
• More coming soon!