21396620738613564

Names of 21396620738613564

• Cardinal: 21396620738613564 can be written as Twenty-one quadrillion, three hundred ninety-six trillion, six hundred twenty billion, seven hundred thirty-eight million, six hundred thirteen thousand, five hundred sixty-four.

Scientific notation

• Scientific notation: 2.1396620738613564 × 10¹⁶

Factors of 21396620738613564

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 13822106420341

Divisors of 21396620738613564

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 3 4 6 9 12 18 36 43 86 129 172 258 387 516 774 1548 13822106420293 27644212840586 41466319260879 55288425681172 82932638521758 124398957782637 165865277043516 248797915565274 497595831130548 594350576072599 1188701152145198 1783051728217797 2377402304290396 3566103456435594 5349155184653391 7132206912871188 10698310369306782 21396620738613564
• Sum of all divisors σ(n): 55343714106857176
• Sum of proper divisors (its aliquot sum) s(n): 33947093368243612
• 21396620738613564 is an abundant number, because the sum of its proper divisors (33947093368243612) is greater than itself. Its abundance is 12550472629630048

Bases of 21396620738613564

• Binary: 1001100000001000001110011111010100001001101000100111100₂
• Hexadecimal: 0x4C041CFA84D13C
• Base-36: 5UOGVVBE6V0

Squares and roots of 21396620738613564

• 21396620738613564 squared (21396620738613564²) is 457815379032068057057356924782096
• 21396620738613564 cubed (21396620738613564³) is 9795702033453776791881242237620841548903849950144
• The square root of 21396620738613564 is 146275837.8496379149
• The cube root of 21396620738613564 is 277618.4954583673

Scales and comparisons

• 21,396,620,738,613,564 seconds is equal to 680,346,355 years, 20 weeks, 3 days, 13 hours, 59 minutes, 24 seconds.
• To count from 1 to 21,396,620,738,613,564 would take you about two billion, forty-one million, thirty-nine thousand and sixty-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 21396620738613564 cubic inches would be around 23134.9 feet tall.

Recreational maths with 21396620738613564

• 21396620738613564 backwards is 46531683702669312
• The number of decimal digits it has is: 17
• The sum of 21396620738613564's digits is 72
• More coming soon!