21311772160

Names of 21311772160

• Cardinal: 21311772160 can be written as Twenty-one billion, three hundred eleven million, seven hundred seventy-two thousand, one hundred sixty.

Scientific notation

• Scientific notation: 2.131177216 × 10¹⁰

Factors of 21311772160

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3880

Divisors of 21311772160

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 337 448 512 560 640 674 896 1120 1280 1348 1685 1792 2240 2359 2560 2696 3370 3529 3584 4480 4718 5392 6740 7058 8960 9436 10784 11795 13480 14116 17645 17920 18872 21568 23590 24703 26960 28232 35290 37744 43136 47180 49406 53920 56464 70580 75488 86272 94360 98812 107840 112928 123515 141160 150976 172544 188720 197624 215680 225856 247030 282320 301952 377440 395248 431360 451712 494060 564640 603904 754880 790496 862720 903424 988120 1129280 1189273 1207808 1509760 1580992 1806848 1976240 2258560 2378546 3019520 3161984 3952480 4517120 4757092 5946365 6039040 6323968 7904960 8324911 9034240 9514184 11892730 12647936 15809920 16649822 19028368 23785460 31619840 33299644 38056736 41624555 47570920 63239680 66599288 76113472 83249110 95141840 133198576 152226944 166498220 190283680 266397152 304453888 332996440 380567360 532794304 608907776 665992880 761134720 1065588608 1331985760 1522269440 2131177216 2663971520 3044538880 4262354432 5327943040 10655886080 21311772160
• Sum of all divisors σ(n): 58587946560
• Sum of proper divisors (its aliquot sum) s(n): 37276174400
• 21311772160 is an abundant number, because the sum of its proper divisors (37276174400) is greater than itself. Its abundance is 15964402240

Bases of 21311772160

• Binary: 10011110110010001111101011000000000₂
• Hexadecimal: 0x4F647D600
• Base-36: 9SGH8N4

Squares and roots of 21311772160

• 21311772160 squared (21311772160²) is 454191632599751065600
• 21311772160 cubed (21311772160³) is 9679628590944323182784413696000
• The square root of 21311772160 is 145985.5203778785
• The cube root of 21311772160 is 2772.5104272839

Scales and comparisons

• 21,311,772,160 seconds is equal to 677 years, 33 weeks, 5 days, 42 minutes, 40 seconds.
• To count from 1 to 21,311,772,160 would take you about one thousand, three hundred fifty-five 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 21311772160 cubic inches would be around 231 feet tall.

Recreational maths with 21311772160

• 21311772160 backwards is 06127711312
• The number of decimal digits it has is: 11
• The sum of 21311772160's digits is 31
• More coming soon!