21380822778815720

Names of 21380822778815720

• Cardinal: 21380822778815720 can be written as Twenty-one quadrillion, three hundred eighty trillion, eight hundred twenty-two billion, seven hundred seventy-eight million, eight hundred fifteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.138082277881572 × 10¹⁶

Factors of 21380822778815720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 167593894

Divisors of 21380822778815720

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 290447 580894 1161788 1452235 2323576 2904470 3194917 5808940 6389834 11617880 12779668 15974585 25559336 31949170 63898340 127796680 167303429 334606858 669213716 836517145 1338427432 1673034290 1840337719 3346068580 3680675438 6692137160 7361350876 9201688595 14722701752 18403377190 36806754380 73613508760 48592779042763 97185558085526 194371116171052 242963895213815 388742232342104 485927790427630 534520569470393 971855580855260 1069041138940786 1943711161710520 2138082277881572 2672602847351965 4276164555763144 5345205694703930 10690411389407860 21380822778815720
• Sum of all divisors σ(n): 52480382367571200
• Sum of proper divisors (its aliquot sum) s(n): 31099559588755480
• 21380822778815720 is an abundant number, because the sum of its proper divisors (31099559588755480) is greater than itself. Its abundance is 9718736809939760

Bases of 21380822778815720

• Binary: 1001011111101011011111010111010101111001010010011101000₂
• Hexadecimal: 0x4BF5BEBABCA4E8
• Base-36: 5UIVADY0S88

Squares and roots of 21380822778815720

• 21380822778815720 squared (21380822778815720²) is 457139582699125166797605719118400
• 21380822778815720 cubed (21380822778815720³) is 9774020402871767987338628056249899736114461248000
• The square root of 21380822778815720 is 146221827.2995373285
• The cube root of 21380822778815720 is 277550.1531138633

Scales and comparisons

• 21,380,822,778,815,720 seconds is equal to 679,844,029 years, 7 weeks, 1 day, 15 hours, 55 minutes, 20 seconds.
• To count from 1 to 21,380,822,778,815,720 would take you about two billion, thirty-nine million, five hundred thirty-two thousand and eighty-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 21380822778815720 cubic inches would be around 23129.2 feet tall.

Recreational maths with 21380822778815720

• 21380822778815720 backwards is 02751887722808312
• The number of decimal digits it has is: 17
• The sum of 21380822778815720's digits is 71
• More coming soon!