21231254985018

Names of 21231254985018

• Cardinal: 21231254985018 can be written as Twenty-one trillion, two hundred thirty-one billion, two hundred fifty-four million, nine hundred eighty-five thousand and eighteen.

Scientific notation

• Scientific notation: 2.1231254985018 × 10¹³

Factors of 21231254985018

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 43712650

Divisors of 21231254985018

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 6 13 26 39 78 169 338 479 507 958 1014 1437 2874 6227 12454 18681 37362 80951 161902 242853 485706 43712153 87424306 131136459 262272918 568257989 1136515978 1704773967 3409547934 7387353857 14774707714 20938121287 22162061571 41876242574 44324123142 62814363861 125628727722 272195576731 544391153462 816586730193 1633173460386 3538542497503 7077084995006 10615627492509 21231254985018
• Sum of all divisors σ(n): 46076107288320
• Sum of proper divisors (its aliquot sum) s(n): 24844852303302
• 21231254985018 is an abundant number, because the sum of its proper divisors (24844852303302) is greater than itself. Its abundance is 3613597318284

Bases of 21231254985018

• Binary: 100110100111101001001011010010101100100111010₂
• Hexadecimal: 0x134F4969593A
• Base-36: 7IXI51K56

Squares and roots of 21231254985018

• 21231254985018 squared (21231254985018²) is 450766188238851675404460324
• 21231254985018 cubed (21231254985018³) is 9570331881123681795494849475316995425832
• The square root of 21231254985018 is 4607738.5977307785
• The cube root of 21231254985018 is 27690.1444974717

Scales and comparisons

• 21,231,254,985,018 seconds is equal to 675,088 years, 12 weeks, 1 day, 21 hours, 10 minutes, 18 seconds.
• To count from 1 to 21,231,254,985,018 would take you about one million, six hundred eighty-seven thousand, seven 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 21231254985018 cubic inches would be around 2307.5 feet tall.

Recreational maths with 21231254985018

• 21231254985018 backwards is 81058945213212
• The number of decimal digits it has is: 14
• The sum of 21231254985018's digits is 51
• More coming soon!