21018654186716

Names of 21018654186716

• Cardinal: 21018654186716 can be written as Twenty-one trillion, eighteen billion, six hundred fifty-four million, one hundred eighty-six thousand, seven hundred sixteen.

Scientific notation

• Scientific notation: 2.1018654186716 × 10¹³

Factors of 21018654186716

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 28225836

Divisors of 21018654186716

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 17 34 47 68 94 188 233 466 799 932 1598 3196 3961 7922 10951 15844 21902 43804 186167 372334 744668 28225537 56451074 112902148 479834129 959668258 1326600239 1919336516 2653200478 5306400956 6576550121 13153100242 22552204063 26306200484 45104408126 90208816252 111801352057 223602704114 309097855687 447205408228 618195711374 1236391422748 5254663546679 10509327093358 21018654186716
• Sum of all divisors σ(n): 39945684594816
• Sum of proper divisors (its aliquot sum) s(n): 18927030408100
• 21018654186716 is a deficient number, because the sum of its proper divisors (18927030408100) is less than itself. Its deficiency is 2091623778616

Bases of 21018654186716

• Binary: 100110001110111001001011010101001110011011100₂
• Hexadecimal: 0x131DC96A9CDC
• Base-36: 7G7U40MAK

Squares and roots of 21018654186716

• 21018654186716 squared (21018654186716²) is 441783823820754035390864656
• 21018654186716 cubed (21018654186716³) is 9285701418173495537500249437333709109696
• The square root of 21018654186716 is 4584610.5817960155
• The cube root of 21018654186716 is 27597.4084710175

Scales and comparisons

• 21,018,654,186,716 seconds is equal to 668,328 years, 9 weeks, 5 days, 11 hours, 51 minutes, 56 seconds.
• To count from 1 to 21,018,654,186,716 would take you about one million, six hundred seventy thousand, eight hundred twenty 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 21018654186716 cubic inches would be around 2299.8 feet tall.

Recreational maths with 21018654186716

• 21018654186716 backwards is 61768145681012
• The number of decimal digits it has is: 14
• The sum of 21018654186716's digits is 56
• More coming soon!