21118743568

Names of 21118743568

• Cardinal: 21118743568 can be written as Twenty-one billion, one hundred eighteen million, seven hundred forty-three thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1118743568 × 10¹⁰

Factors of 21118743568

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4886

Divisors of 21118743568

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 13 16 26 52 104 113 197 208 226 394 452 788 904 1469 1576 1808 2561 2938 3152 4561 5122 5876 9122 10244 11752 18244 20488 22261 23504 36488 40976 44522 59293 72976 89044 118586 178088 237172 289393 356176 474344 515393 578786 898517 948688 1030786 1157572 1797034 2061572 2315144 3594068 4123144 4630288 6700109 7188136 8246288 11680721 13400218 14376272 23361442 26800436 46722884 53600872 93445768 101532421 107201744 186891536 203064842 406129684 812259368 1319921473 1624518736 2639842946 5279685892 10559371784 21118743568
• Sum of all divisors σ(n): 44690483376
• Sum of proper divisors (its aliquot sum) s(n): 23571739808
• 21118743568 is an abundant number, because the sum of its proper divisors (23571739808) is greater than itself. Its abundance is 2452996240

Bases of 21118743568

• Binary: 10011101010110001100111010000010000₂
• Hexadecimal: 0x4EAC67410
• Base-36: 9P9JYTS

Squares and roots of 21118743568

• 21118743568 squared (21118743568²) is 446001329890941370624
• 21118743568 cubed (21118743568³) is 9418987716953764212330704146432
• The square root of 21118743568 is 145322.8941633079
• The cube root of 21118743568 is 2764.1144773007

Scales and comparisons

• 21,118,743,568 seconds is equal to 671 years, 26 weeks, 3 days, 21 hours, 39 minutes, 28 seconds.
• To count from 1 to 21,118,743,568 would take you about one thousand, three hundred forty-three 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 21118743568 cubic inches would be around 230.3 feet tall.

Recreational maths with 21118743568

• 21118743568 backwards is 86534781112
• The number of decimal digits it has is: 11
• The sum of 21118743568's digits is 46
• More coming soon!