21721163212957

Names of 21721163212957

• Cardinal: 21721163212957 can be written as Twenty-one trillion, seven hundred twenty-one billion, one hundred sixty-three million, two hundred twelve thousand, nine hundred fifty-seven.

Scientific notation

• Scientific notation: 2.1721163212957 × 10¹³

Factors of 21721163212957

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 95

Divisors of 21721163212957

• Number of divisors d(n): 42
• Complete list of divisors:
  1 13 29 53 377 689 841 1537 2809 10933 19981 24389 36517 44573 81461 317057 579449 707281 1058993 1292617 2362369 9194653 16804021 20511149 30710797 37485893 68508701 266644937 487316609 594823321 890613113 1087090897 1986752329 7732703173 14132181661 25827780277 31525636013 57615817541 409833268169 749005628033 1670858708689 21721163212957
• Sum of all divisors σ(n): 24693197934902
• Sum of proper divisors (its aliquot sum) s(n): 2972034721945
• 21721163212957 is a deficient number, because the sum of its proper divisors (2972034721945) is less than itself. Its deficiency is 18749128491012

Bases of 21721163212957

• Binary: 100111100000101011010001101111010100010011101₂
• Hexadecimal: 0x13C15A37A89D
• Base-36: 7P6KBR44D

Squares and roots of 21721163212957

• 21721163212957 squared (21721163212957²) is 471808931323916463332683849
• 21721163212957 cubed (21721163212957³) is 10248238802617609886380027393534741431493
• The square root of 21721163212957 is 4660596.8730364355
• The cube root of 21721163212957 is 27901.5090686333

Scales and comparisons

• 21,721,163,212,957 seconds is equal to 690,665 years, 41 weeks, 5 days, 2 minutes, 37 seconds.
• To count from 1 to 21,721,163,212,957 would take you about one million, seven hundred twenty-six 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 21721163212957 cubic inches would be around 2325.1 feet tall.

Recreational maths with 21721163212957

• 21721163212957 backwards is 75921236112712
• The number of decimal digits it has is: 14
• The sum of 21721163212957's digits is 49
• More coming soon!