20991833050700721

Names of 20991833050700721

• Cardinal: 20991833050700721 can be written as Twenty quadrillion, nine hundred ninety-one trillion, eight hundred thirty-three billion, fifty million, seven hundred thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 2.0991833050700721 × 10¹⁶

Factors of 20991833050700721

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 17604854597

Divisors of 20991833050700721

• Number of divisors d(n): 32
• Complete list of divisors:
  1 3 11 23 33 69 253 759 1571 4713 17281 36133 51843 108399 397463 1192389 17604852989 52814558967 193653382879 404911618747 580960148637 1214734856241 4454027806217 13362083418651 27657224045719 82971672137157 304229464502909 636116153051537 912688393508727 1908348459154611 6997277683566907 20991833050700721
• Sum of all divisors σ(n): 31881402893122560
• Sum of proper divisors (its aliquot sum) s(n): 10889569842421839
• 20991833050700721 is a deficient number, because the sum of its proper divisors (10889569842421839) is less than itself. Its deficiency is 10102263208278882

Bases of 20991833050700721

• Binary: 1001010100100111111011000000000001010111101101110110001₂
• Hexadecimal: 0x4A93F6002BDBB1
• Base-36: 5QOZEZ1BHRL

Squares and roots of 20991833050700721

• 20991833050700721 squared (20991833050700721²) is 440657054828491138993749109919841
• 20991833050700721 cubed (20991833050700721³) is 9250199327573160025277601448430240024597190905361
• The square root of 20991833050700721 is 144885586.0694938867
• The cube root of 20991833050700721 is 275856.6479311035

Scales and comparisons

• 20,991,833,050,700,721 seconds is equal to 667,475,359 years, 3 days, 9 hours, 45 minutes, 21 seconds.
• To count from 1 to 20,991,833,050,700,721 would take you about two billion, two million, four hundred twenty-six thousand and seventy-seven 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 20991833050700721 cubic inches would be around 22988.1 feet tall.

Recreational maths with 20991833050700721

• 20991833050700721 backwards is 12700705033819902
• The number of decimal digits it has is: 17
• The sum of 20991833050700721's digits is 57
• More coming soon!