21709118743

Names of 21709118743

• Cardinal: 21709118743 can be written as Twenty-one billion, seven hundred nine million, one hundred eighteen thousand, seven hundred forty-three.

Scientific notation

• Scientific notation: 2.1709118743 × 10¹⁰

Factors of 21709118743

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 209

Divisors of 21709118743

• Number of divisors d(n): 72
• Complete list of divisors:
  1 13 19 31 37 109 247 361 403 481 589 703 1147 1369 1417 2071 3379 4033 4693 7657 9139 11191 13357 14911 17797 21793 26011 26923 39349 42439 43927 52429 64201 76627 125023 145483 149221 173641 283309 338143 414067 494209 511537 551707 806341 834613 996151 1219819 1455913 1625299 1939873 2375437 2835199 4625851 5382871 6424717 10482433 15320479 15857647 18926869 30880681 36857587 45133303 53868781 60136063 87891169 199166227 586732939 700294153 1142585197 1669932211 21709118743
• Sum of all divisors σ(n): 26417381760
• Sum of proper divisors (its aliquot sum) s(n): 4708263017
• 21709118743 is a deficient number, because the sum of its proper divisors (4708263017) is less than itself. Its deficiency is 17000855726

Bases of 21709118743

• Binary: 10100001101111101101101110100010111₂
• Hexadecimal: 0x50DF6DD17
• Base-36: 9Z11R87

Squares and roots of 21709118743

• 21709118743 squared (21709118743²) is 471285836597673900049
• 21709118743 cubed (21709118743³) is 10231200188592997813755654518407
• The square root of 21709118743 is 147340.1464061985
• The cube root of 21709118743 is 2789.6350949815

Scales and comparisons

• 21,709,118,743 seconds is equal to 690 years, 14 weeks, 4 days, 22 hours, 45 minutes, 43 seconds.
• To count from 1 to 21,709,118,743 would take you about one thousand, three hundred eighty 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 21709118743 cubic inches would be around 232.5 feet tall.

Recreational maths with 21709118743

• 21709118743 backwards is 34781190712
• The number of decimal digits it has is: 11
• The sum of 21709118743's digits is 43
• More coming soon!