21668165090

Names of 21668165090

• Cardinal: 21668165090 can be written as Twenty-one billion, six hundred sixty-eight million, one hundred sixty-five thousand and ninety.

Scientific notation

• Scientific notation: 2.166816509 × 10¹⁰

Factors of 21668165090

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 182675

Divisors of 21668165090

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 10 11 13 22 26 55 65 83 110 130 143 166 286 415 715 830 913 1079 1430 1826 2158 4565 5395 9130 10790 11869 23738 59345 118690 182561 365122 912805 1825610 2008171 2373293 4016342 4746586 10040855 11866465 15152563 20081710 23732930 26106223 30305126 52212446 75762815 130531115 151525630 166678193 196983319 261062230 333356386 393966638 833390965 984916595 1666781930 1969833190 2166816509 4333633018 10834082545 21668165090
• Sum of all divisors σ(n): 46373668992
• Sum of proper divisors (its aliquot sum) s(n): 24705503902
• 21668165090 is an abundant number, because the sum of its proper divisors (24705503902) is greater than itself. Its abundance is 3037338812

Bases of 21668165090

• Binary: 10100001011100001011111010111100010₂
• Hexadecimal: 0x50B85F5E2
• Base-36: 9YCNZ6Q

Squares and roots of 21668165090

• 21668165090 squared (21668165090²) is 469509378367494708100
• 21668165090 cubed (21668165090³) is 10173406721770150024812160229000
• The square root of 21668165090 is 147201.1042417821
• The cube root of 21668165090 is 2787.8798008905

Scales and comparisons

• 21,668,165,090 seconds is equal to 688 years, 50 weeks, 6 days, 22 hours, 44 minutes, 50 seconds.
• To count from 1 to 21,668,165,090 would take you about one thousand, three hundred seventy-seven 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 21668165090 cubic inches would be around 232.3 feet tall.

Recreational maths with 21668165090

• 21668165090 backwards is 09056186612
• The number of decimal digits it has is: 11
• The sum of 21668165090's digits is 44
• More coming soon!