642938990377262571

Names of 642938990377262571

• Cardinal: 642938990377262571 can be written as Six hundred forty-two quadrillion, nine hundred thirty-eight trillion, nine hundred ninety billion, three hundred seventy-seven million, two hundred sixty-two thousand, five hundred seventy-one.

Scientific notation

• Scientific notation: 6.42938990377262571 × 10¹⁷

Factors of 642938990377262571

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2383

Divisors of 642938990377262571

• Number of divisors d(n): 84
• Complete list of divisors:
  1 3 9 27 41 81 123 243 369 729 1107 1681 2339 3321 5043 7017 9963 15129 21051 29889 45387 63153 68921 95899 136161 189459 206763 287697 408483 568377 620289 863091 1225449 1705131 1860867 2589273 3931859 5470921 5582601 7767819 11795577 16412763 16747803 23303457 35386731 49238289 50243409 69910371 106160193 147714867 161206219 224307761 318480579 443144601 483618657 672923283 955441737 1329433803 1450855971 2018769849 2866325211 3988301409 4352567913 6056309547 9196618201 13057703739 18168928641 27589854603 39173111217 54506785923 82769563809 117519333651 163520357769 248308691427 377061346241 744926074281 1131184038723 2234778222843 3393552116169 6704334668529 10180656348507 30541969045521 91625907136563 274877721409689
• Sum of all divisors σ(n): 643086724439594694
• Sum of proper divisors (its aliquot sum) s(n): 147734062332123
• 642938990377262571 is a deficient number, because the sum of its proper divisors (147734062332123) is less than itself. Its deficiency is 642791256314930448

Bases of 642938990377262571

• Binary: 100011101100001011011001101011110101101011110101110111101011₂
• Hexadecimal: 0x8EC2D9AF5AF5DEB
• Base-36: 4VUMUMNPTJOR

Squares and roots of 642938990377262571

• 642938990377262571 squared (642938990377262571²) is 413370545347333732869413627477530041
• 642938990377262571 cubed (642938990377262571³) is 265772041077313184117397811599981604619807817997395411
• The square root of 642938990377262571 is 801834765.0091398793
• 642938990377262571 is a perfect cube number. Its cube root is 863091

Scales and comparisons

• 642,938,990,377,262,571 seconds is equal to 20,443,471,153 years, 6 weeks, 2 days, 20 hours, 2 minutes, 51 seconds.
• To count from 1 to 642,938,990,377,262,571 would take you about sixty-one billion, three hundred thirty million, four hundred thirteen thousand, four hundred fifty-nine 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 642938990377262571 cubic inches would be around 71924.3 feet tall.

Recreational maths with 642938990377262571

• 642938990377262571 backwards is 175262773099839246
• The number of decimal digits it has is: 18
• The sum of 642938990377262571's digits is 90
• More coming soon!