21135791040

Names of 21135791040

• Cardinal: 21135791040 can be written as Twenty-one billion, one hundred thirty-five million, seven hundred ninety-one thousand and forty.

Scientific notation

• Scientific notation: 2.113579104 × 10¹⁰

Factors of 21135791040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 241969

Divisors of 21135791040

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 13 14 15 16 20 21 24 26 28 30 32 35 39 40 42 48 52 56 60 64 65 70 78 80 84 91 96 104 105 112 120 130 140 156 160 168 182 192 195 208 210 224 240 260 273 280 312 320 336 364 390 416 420 448 455 480 520 546 560 624 672 728 780 832 840 910 960 1040 1092 1120 1248 1344 1365 1456 1560 1680 1820 2080 2184 2240 2496 2730 2912 3120 3360 3640 4160 4368 5460 5824 6240 6720 7280 8736 10920 12480 14560 17472 21840 29120 43680 87360 241939 483878 725817 967756 1209695 1451634 1693573 1935512 2419390 2903268 3145207 3387146 3629085 3871024 4838780 5080719 5806536 6290414 6774292 7258170 7742048 8467865 9435621 9677560 10161438 11613072 12580828 13548584 14516340 15484096 15726035 16935730 18871242 19355120 20322876 22016449 23226144 25161656 25403595 27097168 29032680 31452070 33871460 37742484 38710240 40645752 44032898 46452288 47178105 50323312 50807190 54194336 58065360 62904140 66049347 67742920 75484968 77420480 81291504 88065796 94356210 100646624 101614380 108388672 110082245 116130720 125808280 132098694 135485840 150969936 162583008 176131592 188712420 201293248 203228760 220164490 232261440 251616560 264197388 270971680 301939872 325166016 330246735 352263184 377424840 406457520 440328980 503233120 528394776 541943360 603879744 660493470 704526368 754849680 812915040 880657960 1006466240 1056789552 1320986940 1409052736 1509699360 1625830080 1761315920 2113579104 2641973880 3019398720 3522631840 4227158208 5283947760 7045263680 10567895520 21135791040
• Sum of all divisors σ(n): 82592509440
• Sum of proper divisors (its aliquot sum) s(n): 61456718400
• 21135791040 is an abundant number, because the sum of its proper divisors (61456718400) is greater than itself. Its abundance is 40320927360

Bases of 21135791040

• Binary: 10011101011110010101001001111000000₂
• Hexadecimal: 0x4EBCA93C0
• Base-36: 9PJPCQO

Squares and roots of 21135791040

• 21135791040 squared (21135791040²) is 446721662886544281600
• 21135791040 cubed (21135791040³) is 9441815719811323163604516864000
• The square root of 21135791040 is 145381.5361041421
• The cube root of 21135791040 is 2764.8580267555

Scales and comparisons

• 21,135,791,040 seconds is equal to 672 years, 2 weeks, 5 days, 5 hours, 4 minutes.
• To count from 1 to 21,135,791,040 would take you about one thousand, three hundred forty-four 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 21135791040 cubic inches would be around 230.4 feet tall.

Recreational maths with 21135791040

• 21135791040 backwards is 04019753112
• The number of decimal digits it has is: 11
• The sum of 21135791040's digits is 33
• More coming soon!