21380680937439

Names of 21380680937439

• Cardinal: 21380680937439 can be written as Twenty-one trillion, three hundred eighty billion, six hundred eighty million, nine hundred thirty-seven thousand, four hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1380680937439 × 10¹³

Factors of 21380680937439

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 69628052

Divisors of 21380680937439

• Number of divisors d(n): 40
• Complete list of divisors:
  1 3 9 17 27 51 81 153 223 459 669 1377 2007 3791 6021 11373 18063 34119 102357 307071 69627809 208883427 626650281 1183672753 1879950843 3551018259 5639852529 10653054777 15527001407 31959164331 46581004221 95877492993 139743012663 263959023919 419229037989 791877071757 1257687113967 2375631215271 7126893645813 21380680937439
• Sum of all divisors σ(n): 33969458920320
• Sum of proper divisors (its aliquot sum) s(n): 12588777982881
• 21380680937439 is a deficient number, because the sum of its proper divisors (12588777982881) is less than itself. Its deficiency is 8791902954558

Bases of 21380680937439

• Binary: 100110111001000010011111001000110111111011111₂
• Hexadecimal: 0x137213E46FDF
• Base-36: 7KU5DEAXR

Squares and roots of 21380680937439

• 21380680937439 squared (21380680937439²) is 457133517348567435831878721
• 21380680937439 cubed (21380680937439³) is 9773825880238956173665641211310836335519
• The square root of 21380680937439 is 4623924.8412402855
• The cube root of 21380680937439 is 27754.9539352281

Scales and comparisons

• 21,380,680,937,439 seconds is equal to 679,839 years, 26 weeks, 6 days, 22 hours, 10 minutes, 39 seconds.
• To count from 1 to 21,380,680,937,439 would take you about one million, six hundred ninety-nine thousand, five hundred ninety-eight 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 21380680937439 cubic inches would be around 2312.9 feet tall.

Recreational maths with 21380680937439

• 21380680937439 backwards is 93473908608312
• The number of decimal digits it has is: 14
• The sum of 21380680937439's digits is 63
• More coming soon!