21321418555259942

Names of 21321418555259942

• Cardinal: 21321418555259942 can be written as Twenty-one quadrillion, three hundred twenty-one trillion, four hundred eighteen billion, five hundred fifty-five million, two hundred fifty-nine thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 2.1321418555259942 × 10¹⁶

Factors of 21321418555259942

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 6415733

Divisors of 21321418555259942

• Number of divisors d(n): 24
• Complete list of divisors:
  1 2 7 14 37 74 259 518 6415687 12831374 44909809 89819618 237380419 474760838 1661662933 3323325866 41161039681969 82322079363938 288127277773783 576254555547566 1522958468232853 3045916936465706 10660709277629971 21321418555259942
• Sum of all divisors σ(n): 37538874041063184
• Sum of proper divisors (its aliquot sum) s(n): 16217455485803242
• 21321418555259942 is a deficient number, because the sum of its proper divisors (16217455485803242) is less than itself. Its deficiency is 5103963069456700

Bases of 21321418555259942

• Binary: 1001011101111111011011110011011000101111111110000100110₂
• Hexadecimal: 0x4BBFB79B17FC26
• Base-36: 5TXT8GP36EE

Squares and roots of 21321418555259942

• 21321418555259942 squared (21321418555259942²) is 454602889208582952389115189843364
• 21321418555259942 cubed (21321418555259942³) is 9692778477246660210552619658568580113897283724888
• The square root of 21321418555259942 is 146018555.5169614119
• The cube root of 21321418555259942 is 277292.8673391981

Scales and comparisons

• 21,321,418,555,259,942 seconds is equal to 677,955,158 years, 30 weeks, 21 hours, 59 minutes, 2 seconds.
• To count from 1 to 21,321,418,555,259,942 would take you about two billion, thirty-three million, eight hundred sixty-five thousand, four hundred seventy-five 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 21321418555259942 cubic inches would be around 23107.7 feet tall.

Recreational maths with 21321418555259942

• 21321418555259942 backwards is 24995255581412312
• The number of decimal digits it has is: 17
• The sum of 21321418555259942's digits is 68
• More coming soon!