13688721045

Names of 13688721045

• Cardinal: 13688721045 can be written as Thirteen billion, six hundred eighty-eight million, seven hundred twenty-one thousand and forty-five.

Scientific notation

• Scientific notation: 1.3688721045 × 10¹⁰

Factors of 13688721045

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1392

Divisors of 13688721045

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 9 15 17 41 45 51 85 123 153 205 255 369 607 615 697 719 765 1821 1845 2091 2157 3035 3485 3595 5463 6273 6471 9105 10319 10455 10785 12223 24887 27315 29479 30957 31365 32355 36669 51595 61115 74661 88437 92871 110007 124435 147395 154785 183345 223983 265311 373305 423079 436433 442185 464355 501143 550035 1119915 1269237 1309299 1326555 1503429 2115395 2182165 2505715 3807711 3927897 4510287 6346185 6546495 7419361 7517145 17893753 19038555 19639485 22258083 22551435 37096805 53681259 66774249 89468765 111290415 161043777 268406295 304193801 333871245 805218885 912581403 1520969005 2737744209 4562907015 13688721045
• Sum of all divisors σ(n): 25813831680
• Sum of proper divisors (its aliquot sum) s(n): 12125110635
• 13688721045 is a deficient number, because the sum of its proper divisors (12125110635) is less than itself. Its deficiency is 1563610410

Bases of 13688721045

• Binary: 1100101111111010010100111010010101₂
• Hexadecimal: 0x32FE94E95
• Base-36: 6ADWSR9

Squares and roots of 13688721045

• 13688721045 squared (13688721045²) is 187381083847825892025
• 13688721045 cubed (13688721045³) is 2565007385902643865658515166125
• The square root of 13688721045 is 116998.8078785421
• The cube root of 13688721045 is 2392.1456805049

Scales and comparisons

• 13,688,721,045 seconds is equal to 435 years, 13 weeks, 3 days, 6 hours, 30 minutes, 45 seconds.
• To count from 1 to 13,688,721,045 would take you about eight hundred seventy 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 13688721045 cubic inches would be around 199.3 feet tall.

Recreational maths with 13688721045

• 13688721045 backwards is 54012788631
• 13688721045 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 13688721045's digits is 45
• More coming soon!