21040123077

Names of 21040123077

• Cardinal: 21040123077 can be written as Twenty-one billion, forty million, one hundred twenty-three thousand and seventy-seven.

Scientific notation

• Scientific notation: 2.1040123077 × 10¹⁰

Factors of 21040123077

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2337791456

Divisors of 21040123077

• Number of divisors d(n): 6
• Complete list of divisors:
  1 3 9 2337791453 7013374359 21040123077
• Sum of all divisors σ(n): 30391288902
• Sum of proper divisors (its aliquot sum) s(n): 9351165825
• 21040123077 is a deficient number, because the sum of its proper divisors (9351165825) is less than itself. Its deficiency is 11688957252

Bases of 21040123077

• Binary: 10011100110000101101100110011000101₂
• Hexadecimal: 0x4E616CCC5
• Base-36: 9NYQUV9

Squares and roots of 21040123077

• 21040123077 squared (21040123077²) is 442686779095307947929
• 21040123077 cubed (21040123077³) is 9314184316725989937642467257533
• The square root of 21040123077 is 145052.1391672665
• The cube root of 21040123077 is 2760.6801462563

Scales and comparisons

• 21,040,123,077 seconds is equal to 669 years, 3 days, 22 hours, 37 minutes, 57 seconds.
• To count from 1 to 21,040,123,077 would take you about one thousand, three hundred thirty-eight 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 21040123077 cubic inches would be around 230.1 feet tall.

Recreational maths with 21040123077

• 21040123077 backwards is 77032104012
• The number of decimal digits it has is: 11
• The sum of 21040123077's digits is 27
• More coming soon!