21376971915

Names of 21376971915

• Cardinal: 21376971915 can be written as Twenty-one billion, three hundred seventy-six million, nine hundred seventy-one thousand, nine hundred fifteen.

Scientific notation

• Scientific notation: 2.1376971915 × 10¹⁰

Factors of 21376971915

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 14556

Divisors of 21376971915

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 13 15 19 39 57 65 95 195 247 285 409 741 1227 1235 2045 3705 5317 6135 7771 14107 15951 23313 26585 38855 42321 70535 79755 101023 116565 183391 211605 268033 303069 505115 550173 804099 916955 1340165 1515345 2750865 3484429 4020495 5769763 10453287 17309289 17422145 28848815 52266435 75006919 86546445 109625497 225020757 328876491 375034595 548127485 1125103785 1425131461 1644382455 4275394383 7125657305 21376971915
• Sum of all divisors σ(n): 38870361600
• Sum of proper divisors (its aliquot sum) s(n): 17493389685
• 21376971915 is a deficient number, because the sum of its proper divisors (17493389685) is less than itself. Its deficiency is 3883582230

Bases of 21376971915

• Binary: 10011111010001010101011010010001011₂
• Hexadecimal: 0x4FA2AB48B
• Base-36: 9TJAP3F

Squares and roots of 21376971915

• 21376971915 squared (21376971915²) is 456974928254698767225
• 21376971915 cubed (21376971915³) is 9768740207159835513753947485875
• The square root of 21376971915 is 146208.6588236141
• The cube root of 21376971915 is 2775.3348908389

Scales and comparisons

• 21,376,971,915 seconds is equal to 679 years, 37 weeks, 3 days, 15 hours, 45 minutes, 15 seconds.
• To count from 1 to 21,376,971,915 would take you about one thousand, three hundred fifty-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 21376971915 cubic inches would be around 231.3 feet tall.

Recreational maths with 21376971915

• 21376971915 backwards is 51917967312
• The number of decimal digits it has is: 11
• The sum of 21376971915's digits is 51
• More coming soon!