21004991021900

Names of 21004991021900

• Cardinal: 21004991021900 can be written as Twenty-one trillion, four billion, nine hundred ninety-one million, twenty-one thousand, nine hundred.

Scientific notation

• Scientific notation: 2.10049910219 × 10¹³

Factors of 21004991021900

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 16805

Divisors of 21004991021900

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 20 25 43 50 86 100 113 172 215 226 430 452 565 860 1075 1130 2150 2260 2825 3221 4300 4859 5650 6442 9718 11300 12884 13421 16105 19436 24295 26842 32210 48590 53684 64420 67105 80525 97180 121475 134210 138503 161050 242950 268420 277006 322100 335525 363973 485900 554012 577103 671050 692515 727946 1154206 1342100 1385030 1455892 1516573 1819865 2308412 2770060 2885515 3033146 3462575 3639730 5771030 6066292 6925150 7279460 7582865 9099325 11542060 13850300 14427575 15165730 15650839 18198650 28855150 30331460 31301678 36397300 37914325 43229041 57710300 62603356 65212639 75828650 78254195 86458082 130425278 151657300 156508390 172916164 216145205 260850556 313016780 326063195 391270975 432290410 652126390 782541950 864580820 1080726025 1304252780 1565083900 1630315975 1858848763 2161452050 3260631950 3717697526 4322904100 4884881633 6521263900 7435395052 9294243815 9769763266 18588487630 19539526532 24424408165 37176975260 46471219075 48848816330 92942438150 97697632660 122122040825 185884876300 210049910219 244244081650 420099820438 488488163300 840199640876 1050249551095 2100499102190 4200998204380 5251247755475 10502495510950 21004991021900
• Sum of all divisors σ(n): 47071716154848
• Sum of proper divisors (its aliquot sum) s(n): 26066725132948
• 21004991021900 is an abundant number, because the sum of its proper divisors (26066725132948) is greater than itself. Its abundance is 5061734111048

Bases of 21004991021900

• Binary: 100110001101010011011000001110100001101001100₂
• Hexadecimal: 0x131A9B07434C
• Base-36: 7G1K5BKUK

Squares and roots of 21004991021900

• 21004991021900 squared (21004991021900²) is 441209647830099606279610000
• 21004991021900 cubed (21004991021900³) is 9267604691446903046485932911033459000000
• The square root of 21004991021900 is 4583120.2277378673
• The cube root of 21004991021900 is 27591.4272813105

Scales and comparisons

• 21,004,991,021,900 seconds is equal to 667,893 years, 38 weeks, 4 days, 18 minutes, 20 seconds.
• To count from 1 to 21,004,991,021,900 would take you about one million, six hundred sixty-nine thousand, seven hundred thirty-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 21004991021900 cubic inches would be around 2299.3 feet tall.

Recreational maths with 21004991021900

• 21004991021900 backwards is 00912019940012
• The number of decimal digits it has is: 14
• The sum of 21004991021900's digits is 38
• More coming soon!