21729426960326401

Names of 21729426960326401

• Cardinal: 21729426960326401 can be written as Twenty-one quadrillion, seven hundred twenty-nine trillion, four hundred twenty-six billion, nine hundred sixty million, three hundred twenty-six thousand, four hundred one.

Scientific notation

• Scientific notation: 2.1729426960326401 × 10¹⁶

Factors of 21729426960326401

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1278201585901570

Divisors of 21729426960326401

• Number of divisors d(n): 4
• Complete list of divisors:
  1 17 1278201585901553 21729426960326401
• Sum of all divisors σ(n): 23007628546227972
• Sum of proper divisors (its aliquot sum) s(n): 1278201585901571
• 21729426960326401 is a deficient number, because the sum of its proper divisors (1278201585901571) is less than itself. Its deficiency is 20451225374424830

Bases of 21729426960326401

• Binary: 1001101001100101100110001110111001001001001111100000001₂
• Hexadecimal: 0x4D32CC77249F01
• Base-36: 5XYFSXR0001

Squares and roots of 21729426960326401

• 21729426960326401 squared (21729426960326401²) is 472167996024159854978448457612801
• 21729426960326401 cubed (21729426960326401³) is 10259939982610668070188669934646835845528235859201
• The square root of 21729426960326401 is 147409046.3992166289
• The cube root of 21729426960326401 is 279050.4696676645

Scales and comparisons

• 21,729,426,960,326,401 seconds is equal to 690,928,563 years, 42 weeks, 1 second.
• To count from 1 to 21,729,426,960,326,401 would take you about two billion, seventy-two million, seven hundred eighty-five thousand, six hundred ninety-one 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 21729426960326401 cubic inches would be around 23254.2 feet tall.

Recreational maths with 21729426960326401

• 21729426960326401 backwards is 10462306962492712
• The number of decimal digits it has is: 17
• The sum of 21729426960326401's digits is 64
• More coming soon!