642406950815

Names of 642406950815

• Cardinal: 642406950815 can be written as Six hundred forty-two billion, four hundred six million, nine hundred fifty thousand, eight hundred fifteen.

Scientific notation

• Scientific notation: 6.42406950815 × 10¹¹

Factors of 642406950815

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 902

Divisors of 642406950815

• Number of divisors d(n): 144
• Complete list of divisors:
  1 5 7 31 35 41 49 67 155 205 217 245 287 335 469 751 1085 1271 1435 1519 1681 2009 2077 2345 2747 3283 3755 5257 6355 7595 8405 8897 10045 10385 11767 13735 14539 16415 19229 23281 26285 30791 36799 44485 50317 52111 58835 62279 72695 82369 85157 96145 101773 112627 116405 134603 153955 162967 183995 215537 251585 260555 311395 352219 364777 411845 425785 508865 563135 596099 673015 788389 814835 954521 1077685 1140769 1262431 1508759 1559827 1761095 1823885 2062997 2465533 2553439 2980495 3491437 3941945 4172693 4772605 5518723 5703845 6312155 6681647 7543795 7799135 8837017 10314985 10918789 12327665 12767195 14440979 17457185 20863465 24440059 27593615 33408235 39135361 44185085 46771529 54593945 61859119 63952907 72204895 76431523 84582877 101086853 122200295 171080413 195676805 233857645 273947527 309295595 319764535 382157615 422914385 447670349 505434265 592080139 855402065 1369737635 1917632689 2238351745 2622069187 2960400695 3133692443 4144560973 9588163445 13110345935 15668462215 18354484309 20722804865 91772421545 128481390163 642406950815
• Sum of all divisors σ(n): 964246597632
• Sum of proper divisors (its aliquot sum) s(n): 321839646817
• 642406950815 is a deficient number, because the sum of its proper divisors (321839646817) is less than itself. Its deficiency is 320567303998

Bases of 642406950815

• Binary: 1001010110010010011100000010011110011111₂
• Hexadecimal: 0x959270279F
• Base-36: 8748IFMN

Squares and roots of 642406950815

• 642406950815 squared (642406950815²) is 412686690455425829164225
• 642406950815 cubed (642406950815³) is 265112798457403870585782882132593375
• The square root of 642406950815 is 801502.9325055523
• The cube root of 642406950815 is 8628.5286165559

Scales and comparisons

• 642,406,950,815 seconds is equal to 20,426 years, 28 weeks, 5 days, 15 hours, 13 minutes, 35 seconds.
• To count from 1 to 642,406,950,815 would take you about forty thousand, eight hundred fifty-three 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 642406950815 cubic inches would be around 719 feet tall.

Recreational maths with 642406950815

• 642406950815 backwards is 518059604246
• The number of decimal digits it has is: 12
• The sum of 642406950815's digits is 50
• More coming soon!