21008723681437127

Names of 21008723681437127

• Cardinal: 21008723681437127 can be written as Twenty-one quadrillion, eight trillion, seven hundred twenty-three billion, six hundred eighty-one million, four hundred thirty-seven thousand, one hundred twenty-seven.

Scientific notation

• Scientific notation: 2.1008723681437127 × 10¹⁶

Factors of 21008723681437127

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 4458664330

Divisors of 21008723681437127

• Number of divisors d(n): 16
• Complete list of divisors:
  1 29 47 1363 3457 100253 162479 4711891 4458660797 129301163113 209557057459 6077154666311 15413590375229 446994120881641 724438747635763 21008723681437127
• Sum of all divisors σ(n): 22201990616856960
• Sum of proper divisors (its aliquot sum) s(n): 1193266935419833
• 21008723681437127 is a deficient number, because the sum of its proper divisors (1193266935419833) is less than itself. Its deficiency is 19815456746017294

Bases of 21008723681437127

• Binary: 1001010101000110101001010101000001101110110010111000111₂
• Hexadecimal: 0x4AA352A83765C7
• Base-36: 5QUYYF6R8HZ

Squares and roots of 21008723681437127

• 21008723681437127 squared (21008723681437127²) is 441366470722977150474200054014129
• 21008723681437127 cubed (21008723681437127³) is 9272546225670136453236949887153446677899883167383
• The square root of 21008723681437127 is 144943863.8971554637
• The cube root of 21008723681437127 is 275930.6154852119

Scales and comparisons

• 21,008,723,681,437,127 seconds is equal to 668,012,428 years, 42 weeks, 4 days, 16 hours, 58 minutes, 47 seconds.
• To count from 1 to 21,008,723,681,437,127 would take you about two billion, four million, thirty-seven thousand, two hundred eighty-six 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 21008723681437127 cubic inches would be around 22994.2 feet tall.

Recreational maths with 21008723681437127

• 21008723681437127 backwards is 72173418632780012
• The number of decimal digits it has is: 17
• The sum of 21008723681437127's digits is 62
• More coming soon!