642649875733734768

Names of 642649875733734768

• Cardinal: 642649875733734768 can be written as Six hundred forty-two quadrillion, six hundred forty-nine trillion, eight hundred seventy-five billion, seven hundred thirty-three million, seven hundred thirty-four thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 6.42649875733734768 × 10¹⁷

Factors of 642649875733734768

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 495871817695788

Divisors of 642649875733734768

• Number of divisors d(n): 50
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 324 432 648 1296 495871817695783 991743635391566 1487615453087349 1983487270783132 2975230906174698 3966974541566264 4462846359262047 5950461812349396 7933949083132528 8925692718524094 11900923624698792 13388539077786141 17851385437048188 23801847249397584 26777078155572282 35702770874096376 40165617233358423 53554156311144564 71405541748192752 80331234466716846 107108312622289128 160662468933433692 214216625244578256 321324937866867384 642649875733734768
• Sum of all divisors σ(n): 1860015188176885784
• Sum of proper divisors (its aliquot sum) s(n): 1217365312443151016
• 642649875733734768 is an abundant number, because the sum of its proper divisors (1217365312443151016) is greater than itself. Its abundance is 574715436709416248

Bases of 642649875733734768

• Binary: 100011101011001001101010100000110110000011101110010101110000₂
• Hexadecimal: 0x8EB26A8360EE570
• Base-36: 4VRSD983S700

Squares and roots of 642649875733734768

• 642649875733734768 squared (642649875733734768²) is 412998862780584739415074709772013824
• 642649875733734768 cubed (642649875733734768³) is 265413667844116559978581514029706260369107896045432832
• The square root of 642649875733734768 is 801654461.5566826421
• The cube root of 642649875733734768 is 862961.6099838297

Scales and comparisons

• 642,649,875,733,734,768 seconds is equal to 20,434,278,201 years, 38 weeks, 6 days, 17 hours, 52 minutes, 48 seconds.
• To count from 1 to 642,649,875,733,734,768 would take you about sixty-one billion, three hundred two million, eight hundred thirty-four thousand, six hundred five 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 642649875733734768 cubic inches would be around 71913.5 feet tall.

Recreational maths with 642649875733734768

• 642649875733734768 backwards is 867437337578946246
• The number of decimal digits it has is: 18
• The sum of 642649875733734768's digits is 99
• More coming soon!