21985613013

Names of 21985613013

• Cardinal: 21985613013 can be written as Twenty-one billion, nine hundred eighty-five million, six hundred thirteen thousand and thirteen.

Scientific notation

• Scientific notation: 2.1985613013 × 10¹⁰

Factors of 21985613013

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2019

Divisors of 21985613013

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 13 19 21 31 39 57 73 91 93 133 217 219 247 273 399 403 511 589 651 741 949 1209 1387 1533 1729 1767 1873 2263 2821 2847 4123 4161 5187 5619 6643 6789 7657 8463 9709 12369 13111 15841 18031 19929 22971 24349 29127 29419 35587 39333 42997 47523 53599 54093 58063 73047 88257 106761 126217 128991 136729 160797 170443 174189 205933 249109 300979 378651 406441 410187 462631 511329 558961 617799 747327 754819 902937 957103 1103197 1219323 1387893 1676883 1777477 2264457 2597851 2871309 3238417 3309591 3912727 4238599 5283733 5332431 7722379 7793553 9715251 11738181 12442339 12715797 14341561 15851199 18184957 23167137 29670193 33772063 37327017 43024683 54554871 55101787 80533381 89010579 100390927 101316189 165305361 236404441 241600143 301172781 385712509 563733667 709213323 1046933953 1157137527 1691201001 3140801859 7328537671 21985613013
• Sum of all divisors σ(n): 39761182720
• Sum of proper divisors (its aliquot sum) s(n): 17775569707
• 21985613013 is a deficient number, because the sum of its proper divisors (17775569707) is less than itself. Its deficiency is 4210043306

Bases of 21985613013

• Binary: 10100011110011100011101010011010101₂
• Hexadecimal: 0x51E71D4D5
• Base-36: A3LNZKL

Squares and roots of 21985613013

• 21985613013 squared (21985613013²) is 483367179557394938169
• 21985613013 cubed (21985613013³) is 10627123752934169732988696793197
• The square root of 21985613013 is 148275.4632870861
• The cube root of 21985613013 is 2801.4283958947

Scales and comparisons

• 21,985,613,013 seconds is equal to 699 years, 3 weeks, 6 days, 2 hours, 43 minutes, 33 seconds.
• To count from 1 to 21,985,613,013 would take you about one thousand, three 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 21985613013 cubic inches would be around 233.5 feet tall.

Recreational maths with 21985613013

• 21985613013 backwards is 31031658912
• 21985613013 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21985613013's digits is 39
• More coming soon!