642887996815855989

Names of 642887996815855989

• Cardinal: 642887996815855989 can be written as Six hundred forty-two quadrillion, eight hundred eighty-seven trillion, nine hundred ninety-six billion, eight hundred fifteen million, eight hundred fifty-five thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 6.42887996815855989 × 10¹⁷

Factors of 642887996815855989

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 373

Divisors of 642887996815855989

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 9 11 27 33 81 99 121 297 359 363 891 1077 1089 1331 3231 3267 3949 3993 9693 9801 11847 11979 29079 35541 35937 43439 106623 107811 128881 130317 319869 386643 390951 477829 1159929 1172853 1417691 1433487 3479787 3518559 4253073 4300461 10439361 12759219 12901383 15594601 38277657 38704149 46268279 46783803 114832971 138804837 140351409 171540611 416414511 421054227 508951069 514621833 1249243533 1263162681 1526853207 1543865499 3747730599 4580559621 4631596497 5598461759 13741678863 13894789491 16610312161 16795385277 41225036589 49830936483 50386155831 61583079349 149492809449 151158467493 182713433771 184749238047 448478428347 453475402479 548140301313 554247714141 1345435285041 1644420903939 1662743142423 2009847771481 4933262711817 4988229427269 5963102065799 6029543314443 14799788135451 17889306197397 18088629943329 22108325486291 53667918592191 54265889829987 65594122723789 66324976458873 161003755776573 162797669489961 196782368171367 198974929376619 483011267329719 590347104514101 596924788129857 721535349961679 1771041313542303 1790774364389571 2164606049885037 5313123940626909 6493818149655111 7936888849578469 19481454448965333 23810666548735407 58444363346895999 71431999646206221 214295998938618663 642887996815855989
• Sum of all divisors σ(n): 1059278388523629120
• Sum of proper divisors (its aliquot sum) s(n): 416390391707773131
• 642887996815855989 is a deficient number, because the sum of its proper divisors (416390391707773131) is less than itself. Its deficiency is 226497605108082858

Bases of 642887996815855989

• Binary: 100011101011111111110011101000011000100100100101000101110101₂
• Hexadecimal: 0x8EBFF3A18925175
• Base-36: 4VU4RWJFZ2B9

Squares and roots of 642887996815855989

• 642887996815855989 squared (642887996815855989²) is 413304976449904060251237082787168121
• 642887996815855989 cubed (642887996815855989³) is 265708808383903356007339250705317226475575439867726669
• The square root of 642887996815855989 is 801802966.3301676693
• The cube root of 642887996815855989 is 863068.1812213403

Scales and comparisons

• 642,887,996,815,855,989 seconds is equal to 20,441,849,715 years, 31 weeks, 2 days, 19 hours, 33 minutes, 9 seconds.
• To count from 1 to 642,887,996,815,855,989 would take you about sixty-one billion, three hundred twenty-five million, five hundred forty-nine thousand, one hundred forty-six 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 642887996815855989 cubic inches would be around 71922.3 feet tall.

Recreational maths with 642887996815855989

• 642887996815855989 backwards is 989558518699788246
• The number of decimal digits it has is: 18
• The sum of 642887996815855989's digits is 117
• More coming soon!