81725632990372

Names of 81725632990372

• Cardinal: 81725632990372 can be written as Eighty-one trillion, seven hundred twenty-five billion, six hundred thirty-two million, nine hundred ninety thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 8.1725632990372 × 10¹³

Factors of 81725632990372

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 13699032

Divisors of 81725632990372

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 7 14 28 49 61 98 122 196 244 427 499 854 998 1708 1996 2989 3493 5978 6986 11956 13972 24451 30439 48902 60878 97804 121756 213073 426146 852292 1491511 2983022 5966044 13698463 27396926 54793852 95889241 191778482 383556964 671224687 835606243 1342449374 1671212486 2684898748 3342424972 5849243701 6835533037 11698487402 13671066074 23396974804 27342132148 40944705907 47848731259 81889411814 95697462518 163778823628 191394925036 334941118813 416967515257 669882237626 833935030514 1339764475252 1667870061028 2918772606799 5837545213598 11675090427196 20431408247593 40862816495186 81725632990372
• Sum of all divisors σ(n): 169436301216000
• Sum of proper divisors (its aliquot sum) s(n): 87710668225628
• 81725632990372 is an abundant number, because the sum of its proper divisors (87710668225628) is greater than itself. Its abundance is 5985035235256

Bases of 81725632990372

• Binary: 10010100101010000111011010100101100110010100100₂
• Hexadecimal: 0x4A543B52CCA4
• Base-36: SYW8JSEQS

Squares and roots of 81725632990372

• 81725632990372 squared (81725632990372²) is 6679079087676980211044698384
• 81725632990372 cubed (81725632990372³) is 545851966233157533819947601254538715958848
• The square root of 81725632990372 is 9040223.0608747703
• The cube root of 81725632990372 is 43396.3061461455

Scales and comparisons

• 81,725,632,990,372 seconds is equal to 2,598,622 years, 17 weeks, 2 days, 23 hours, 32 minutes, 52 seconds.
• To count from 1 to 81,725,632,990,372 would take you about six million, four hundred ninety-six thousand, five hundred fifty-five 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 81725632990372 cubic inches would be around 3616.4 feet tall.

Recreational maths with 81725632990372

• 81725632990372 backwards is 27309923652718
• The number of decimal digits it has is: 14
• The sum of 81725632990372's digits is 64
• More coming soon!