21138240563

Names of 21138240563

• Cardinal: 21138240563 can be written as Twenty-one billion, one hundred thirty-eight million, two hundred forty thousand, five hundred sixty-three.

Scientific notation

• Scientific notation: 2.1138240563 × 10¹⁰

Factors of 21138240563

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 137

Divisors of 21138240563

• Number of divisors d(n): 96
• Complete list of divisors:
  1 11 19 29 37 41 121 209 319 361 407 451 551 703 779 1073 1189 1331 1517 2299 3509 3971 4477 4961 6061 7733 8569 10469 11803 13079 13357 14801 16687 20387 22591 25289 28823 38599 43681 43993 49247 54571 66671 85063 94259 115159 129833 143869 146927 162811 183557 224257 248501 317053 387353 429229 480491 483923 547637 733381 835867 935693 1036849 1266749 1428163 1582559 1616197 1790921 2019127 2466827 2733511 3487583 4260883 4721519 5323153 6024007 9194537 13934239 15881473 17778167 19700131 27135097 30068621 38363413 46869713 51936709 58554683 66264077 101139907 174696203 515566843 571303799 728904847 1112538977 1921658233 21138240563
• Sum of all divisors σ(n): 26706697920
• Sum of proper divisors (its aliquot sum) s(n): 5568457357
• 21138240563 is a deficient number, because the sum of its proper divisors (5568457357) is less than itself. Its deficiency is 15569783206

Bases of 21138240563

• Binary: 10011101011111011111111010000110011₂
• Hexadecimal: 0x4EBEFF433
• Base-36: 9PL5USZ

Squares and roots of 21138240563

• 21138240563 squared (21138240563²) is 446825214099258556969
• 21138240563 cubed (21138240563³) is 9445098865244106737146962133547
• The square root of 21138240563 is 145389.9603239509
• The cube root of 21138240563 is 2764.9648332887

Scales and comparisons

• 21,138,240,563 seconds is equal to 672 years, 6 weeks, 5 days, 13 hours, 29 minutes, 23 seconds.
• To count from 1 to 21,138,240,563 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 21138240563 cubic inches would be around 230.4 feet tall.

Recreational maths with 21138240563

• 21138240563 backwards is 36504283112
• The number of decimal digits it has is: 11
• The sum of 21138240563's digits is 35
• More coming soon!