640820376738459

Names of 640820376738459

• Cardinal: 640820376738459 can be written as Six hundred forty trillion, eight hundred twenty billion, three hundred seventy-six million, seven hundred thirty-eight thousand, four hundred fifty-nine.

Scientific notation

• Scientific notation: 6.40820376738459 × 10¹⁴

Factors of 640820376738459

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 452

Divisors of 640820376738459

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 59 107 177 283 321 531 849 963 2547 3481 6313 10443 11449 16697 18939 30281 31329 34347 50091 56817 90843 103041 150273 205379 272529 372467 616137 675491 985123 1117401 1225043 1786579 1848411 2026473 2955369 3240067 3352203 3675129 5359737 6079419 8866107 9720201 11025387 16079211 21975553 29160603 39853969 58122257 65926659 72277537 105408161 119561907 174366771 191163953 197779977 216832611 316224483 346687169 358685721 523100313 573491859 650497833 948673449 1040061507 1720475577 2351384171 3120184521 4264374683 6219081499 7054152513 11278673227 12793124049 18657244497 20454542971 21162457539 33836019681 38379372147 55971733491 61363628913 101508059043 184090886739 251598106297 665441720393 754794318891 1206818035289 1996325161179 2264382956673 3620454105867 5988975483537 10861362317601 71202264082051 213606792246153 640820376738459
• Sum of all divisors σ(n): 953829942624000
• Sum of proper divisors (its aliquot sum) s(n): 313009565885541
• 640820376738459 is a deficient number, because the sum of its proper divisors (313009565885541) is less than itself. Its deficiency is 327810810852918

Bases of 640820376738459

• Binary: 10010001101101001010011110111010111001101010011011₂
• Hexadecimal: 0x246D29EEB9A9B
• Base-36: 6B5GTETGGR

Squares and roots of 640820376738459

• 640820376738459 squared (640820376738459²) is 410650755243220524626489694681
• 640820376738459 cubed (640820376738459³) is 263153371682893294108217771100756573500436579
• The square root of 640820376738459 is 25314430.2076594053
• The cube root of 640820376738459 is 86214.1937147573

Scales and comparisons

• 640,820,376,738,459 seconds is equal to 20,376,105 years, 41 weeks, 1 day, 13 hours, 7 minutes, 39 seconds.
• To count from 1 to 640,820,376,738,459 would take you about fifty million, nine hundred forty thousand, two hundred sixty-four 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 640820376738459 cubic inches would be around 7184.5 feet tall.

Recreational maths with 640820376738459

• 640820376738459 backwards is 954837673028046
• The number of decimal digits it has is: 15
• The sum of 640820376738459's digits is 72
• More coming soon!