21320397543431556

Names of 21320397543431556

• Cardinal: 21320397543431556 can be written as Twenty-one quadrillion, three hundred twenty trillion, three hundred ninety-seven billion, five hundred forty-three million, four hundred thirty-one thousand, five hundred fifty-six.

Scientific notation

• Scientific notation: 2.1320397543431556 × 10¹⁶

Factors of 21320397543431556

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 847257890217

Divisors of 21320397543431556

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 54 108 233 466 699 932 1398 2097 2796 4194 6291 8388 12582 25164 847257889979 1694515779958 2541773669937 3389031559916 5083547339874 7625321009811 10167094679748 15250642019622 22875963029433 30501284039244 45751926058866 91503852117732 197411088365107 394822176730214 592233265095321 789644353460428 1184466530190642 1776699795285963 2368933060381284 3553399590571926 5330099385857889 7106799181143852 10660198771715778 21320397543431556
• Sum of all divisors σ(n): 55512336951489600
• Sum of proper divisors (its aliquot sum) s(n): 34191939408058044
• 21320397543431556 is an abundant number, because the sum of its proper divisors (34191939408058044) is greater than itself. Its abundance is 12871541864626488

Bases of 21320397543431556

• Binary: 1001011101111101100100111100010000010111101110110000100₂
• Hexadecimal: 0x4BBEC9E20BDD84
• Base-36: 5TXG7F109L0

Squares and roots of 21320397543431556

• 21320397543431556 squared (21320397543431556²) is 454559351409962327813320056581136
• 21320397543431556 cubed (21320397543431556³) is 9691386079144802215090747199346878104886776727616
• The square root of 21320397543431556 is 146015059.3035922305
• The cube root of 21320397543431556 is 277288.4410574589

Scales and comparisons

• 21,320,397,543,431,556 seconds is equal to 677,922,693 years, 29 weeks, 1 day, 9 hours, 12 minutes, 36 seconds.
• To count from 1 to 21,320,397,543,431,556 would take you about two billion, thirty-three million, seven hundred sixty-eight thousand and 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 21320397543431556 cubic inches would be around 23107.4 feet tall.

Recreational maths with 21320397543431556

• 21320397543431556 backwards is 65513434579302312
• The number of decimal digits it has is: 17
• The sum of 21320397543431556's digits is 63
• More coming soon!