21429638446253839

Names of 21429638446253839

• Cardinal: 21429638446253839 can be written as Twenty-one quadrillion, four hundred twenty-nine trillion, six hundred thirty-eight billion, four hundred forty-six million, two hundred fifty-three thousand, eight hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1429638446253839 × 10¹⁶

Factors of 21429638446253839

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 32093550

Divisors of 21429638446253839

• Number of divisors d(n): 16
• Complete list of divisors:
  1 71 1123 8377 79733 594767 9407371 32083979 667923341 2277962509 36030308417 268767492083 2558151897607 19082491937893 301825893609209 21429638446253839
• Sum of all divisors σ(n): 21753412769560320
• Sum of proper divisors (its aliquot sum) s(n): 323774323306481
• 21429638446253839 is a deficient number, because the sum of its proper divisors (323774323306481) is less than itself. Its deficiency is 21105864122947358

Bases of 21429638446253839

• Binary: 1001100001000100010010010000011010000010000011100001111₂
• Hexadecimal: 0x4C22248341070F
• Base-36: 5V067ZU14I7

Squares and roots of 21429638446253839

• 21429638446253839 squared (21429638446253839²) is 459229403937160650903052822237921
• 21429638446253839 cubed (21429638446253839³) is 9841120090262011985336450300663135646054817628719
• The square root of 21429638446253839 is 146388655.4561310225
• The cube root of 21429638446253839 is 277761.2222863179

Scales and comparisons

• 21,429,638,446,253,839 seconds is equal to 681,396,216 years, 19 weeks, 13 hours, 37 minutes, 19 seconds.
• To count from 1 to 21,429,638,446,253,839 would take you about two billion, forty-four million, one hundred eighty-eight thousand, six hundred forty-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 21429638446253839 cubic inches would be around 23146.8 feet tall.

Recreational maths with 21429638446253839

• 21429638446253839 backwards is 93835264483692412
• The number of decimal digits it has is: 17
• The sum of 21429638446253839's digits is 79
• More coming soon!