21324943855891

Names of 21324943855891

• Cardinal: 21324943855891 can be written as Twenty-one trillion, three hundred twenty-four billion, nine hundred forty-three million, eight hundred fifty-five thousand, eight hundred ninety-one.

Scientific notation

• Scientific notation: 2.1324943855891 × 10¹³

Factors of 21324943855891

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 222

Divisors of 21324943855891

• Number of divisors d(n): 72
• Complete list of divisors:
  1 13 37 41 131 169 481 533 1369 1517 1703 4847 5371 6253 6929 17161 17797 19721 22139 56129 63011 69823 179339 198727 223093 231361 256373 634957 703601 729677 819143 907699 2248091 2331407 2583451 2900209 7352899 8254441 9146813 9485801 23493409 26033237 29225183 30308291 33584863 83179367 92171731 95587687 107307733 118908569 305414317 338432081 379927379 963229769 1081331771 1198232503 1242639931 3077636579 3410354047 3970386121 4399617053 12521986997 14057313023 15577022539 40009275527 44334602611 126183099739 162785830961 520120581851 576349833943 1640380296607 21324943855891
• Sum of all divisors σ(n): 24498320183568
• Sum of proper divisors (its aliquot sum) s(n): 3173376327677
• 21324943855891 is a deficient number, because the sum of its proper divisors (3173376327677) is less than itself. Its deficiency is 18151567528214

Bases of 21324943855891

• Binary: 100110110010100011001101101000001000100010011₂
• Hexadecimal: 0x136519B41113
• Base-36: 7K4JKZ7KJ

Squares and roots of 21324943855891

• 21324943855891 squared (21324943855891²) is 454753230456903310975403881
• 21324943855891 cubed (21324943855891³) is 9697587107778524232051193898353186112971
• The square root of 21324943855891 is 4617893.8766380285
• The cube root of 21324943855891 is 27730.8149106167

Scales and comparisons

• 21,324,943,855,891 seconds is equal to 678,067 years, 13 weeks, 19 hours, 31 minutes, 31 seconds.
• To count from 1 to 21,324,943,855,891 would take you about one million, six hundred ninety-five thousand, one hundred sixty-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 21324943855891 cubic inches would be around 2310.9 feet tall.

Recreational maths with 21324943855891

• 21324943855891 backwards is 19855834942312
• The number of decimal digits it has is: 14
• The sum of 21324943855891's digits is 64
• More coming soon!