21396456672992129

Names of 21396456672992129

• Cardinal: 21396456672992129 can be written as Twenty-one quadrillion, three hundred ninety-six trillion, four hundred fifty-six billion, six hundred seventy-two million, nine hundred ninety-two thousand, one hundred twenty-nine.

Scientific notation

• Scientific notation: 2.1396456672992129 × 10¹⁶

Factors of 21396456672992129

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 730279418607

Divisors of 21396456672992129

• Number of divisors d(n): 8
• Complete list of divisors:
  1 83 353 29299 730279418171 60613191708193 257788634614363 21396456672992129
• Sum of all divisors σ(n): 21715588778762592
• Sum of proper divisors (its aliquot sum) s(n): 319132105770463
• 21396456672992129 is a deficient number, because the sum of its proper divisors (319132105770463) is less than itself. Its deficiency is 21077324567221666

Bases of 21396456672992129

• Binary: 1001100000000111111011011000111011100100001101110000001₂
• Hexadecimal: 0x4C03F6C7721B81
• Base-36: 5UOESHYYJ5T

Squares and roots of 21396456672992129

• 21396456672992129 squared (21396456672992129²) is 457808358159229405908053695952641
• 21396456672992129 cubed (21396456672992129³) is 9795476699887614608992129832554296325782549762689
• The square root of 21396456672992129 is 146275277.0395329963
• The cube root of 21396456672992129 is 277617.7858795363

Scales and comparisons

• 21,396,456,672,992,129 seconds is equal to 680,341,138 years, 31 weeks, 6 days, 22 hours, 15 minutes, 29 seconds.
• To count from 1 to 21,396,456,672,992,129 would take you about two billion, forty-one million, twenty-three thousand, four hundred fifteen 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 21396456672992129 cubic inches would be around 23134.8 feet tall.

Recreational maths with 21396456672992129

• 21396456672992129 backwards is 92129927665469312
• 21396456672992129 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21396456672992129's digits is 83
• More coming soon!