21004677941978

Names of 21004677941978

• Cardinal: 21004677941978 can be written as Twenty-one trillion, four billion, six hundred seventy-seven million, nine hundred forty-one thousand, nine hundred seventy-eight.

Scientific notation

• Scientific notation: 2.1004677941978 × 10¹³

Factors of 21004677941978

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 1281133

Divisors of 21004677941978

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 59 118 158581 317162 1122491 2244982 9356279 18712558 66226969 132453938 178005745271 356011490542 10502338970989 21004677941978
• Sum of all divisors σ(n): 32041264741920
• Sum of proper divisors (its aliquot sum) s(n): 11036586799942
• 21004677941978 is a deficient number, because the sum of its proper divisors (11036586799942) is less than itself. Its deficiency is 9968091142036

Bases of 21004677941978

• Binary: 100110001101010001000010111100000101011011010₂
• Hexadecimal: 0x131A885E0ADA
• Base-36: 7G1EYX6U2

Squares and roots of 21004677941978

• 21004677941978 squared (21004677941978²) is 441196495446217149534552484
• 21004677941978 cubed (21004677941978³) is 9267190295977154485270713350226347773352
• The square root of 21004677941978 is 4583086.0718491857
• The cube root of 21004677941978 is 27591.2901969891

Scales and comparisons

• 21,004,677,941,978 seconds is equal to 667,883 years, 40 weeks, 6 days, 9 hours, 39 minutes, 38 seconds.
• To count from 1 to 21,004,677,941,978 would take you about one million, six hundred sixty-nine thousand, seven hundred nine 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 21004677941978 cubic inches would be around 2299.3 feet tall.

Recreational maths with 21004677941978

• 21004677941978 backwards is 87914977640012
• The number of decimal digits it has is: 14
• The sum of 21004677941978's digits is 65
• More coming soon!