640389976597584987

Names of 640389976597584987

• Cardinal: 640389976597584987 can be written as Six hundred forty quadrillion, three hundred eighty-nine trillion, nine hundred seventy-six billion, five hundred ninety-seven million, five hundred eighty-four thousand, nine hundred eighty-seven.

Scientific notation

• Scientific notation: 6.40389976597584987 × 10¹⁷

Factors of 640389976597584987

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 393

Divisors of 640389976597584987

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 43 67 89 129 191 201 267 573 1849 2881 3827 4489 5547 5963 7921 8213 8643 11481 12797 13467 16999 17889 23763 24639 36481 38391 50997 109443 123883 164561 193027 256409 340603 353159 371649 399521 493683 530707 550271 579081 704969 730957 769227 857399 1021809 1059477 1138933 1198563 1512911 1568683 1592121 1650813 2114907 2192871 2444227 2572197 3246809 3416799 4538733 4706049 7332681 8300161 9740427 11025587 14645929 17179403 22820401 23661653 24900483 30313667 31431151 33076761 35557369 36868157 43937787 47232923 48974119 51538209 65055173 67453369 68461203 70984959 76308511 90941001 94293453 101365037 105101761 106672107 110604471 134649079 139612787 141698769 146922357 163763209 195165519 202360107 217536203 228925533 288966001 304095111 315305283 403947237 418838361 491289627 652608609 738714329 866898003 981277243 1303487681 1528966867 1585330751 2031015689 2105887117 2216142987 2797372439 2943831729 3164605841 3281265973 3910463043 4358696591 4519375723 4586900601 4755992253 5789910397 6003349841 6093047067 6317661351 6791457479 7041817987 8392117317 9021488293 9354056729 9493817523 9843797919 12425538043 13076089773 13558127169 14574925601 17369731191 18010049523 19360722067 20374372437 21125453961 25717974089 27064464879 28062170187 37276614129 43724776803 58082166201 65745575281 77153922267 87333674627 136078051163 141094436839 187423953413 197236725843 248966147071 262001023881 292032671597 302798173441 387923996599 402224439347 408234153489 423283310517 534298135849 562271860239 604439715631 626721800843 746898441213 832511048881 876098014791 908394520323 1105872885827 1163771989797 1206673318041 1297168378489 1602894407547 1723104263963 1813319146893 1880165402529 2497533146643 3317618657481 3891505135467 5169312791889 5851356200009 12557404878671 16680731853757 17554068600027 25990907772133 26949037436249 35797975101883 37672214636013 47552534090561 50042195561271 55778240275027 74093483350409 77972723316399 80847112308747 107393925305649 115447985685521 142657602271683 167334720825081 222280450051227 346343957056563 1117609034201719 2398464331826161 3186019784067587 3352827102605157 4964263384477403 7195392995478483 9558059352202761 14892790153432209 213463325532528329 640389976597584987
• Sum of all divisors σ(n): 902222014565486160
• Sum of proper divisors (its aliquot sum) s(n): 261832037967901173
• 640389976597584987 is a deficient number, because the sum of its proper divisors (261832037967901173) is less than itself. Its deficiency is 378557938629683814

Bases of 640389976597584987

• Binary: 100011100011000111110100101001110000110100011101110001011011₂
• Hexadecimal: 0x8E31F4A70D1DC5B
• Base-36: 4V5JATW6ZI3F

Squares and roots of 640389976597584987

• 640389976597584987 squared (640389976597584987²) is 410099322126655447322888440687790169
• 640389976597584987 cubed (640389976597584987³) is 262623495299374348953140000624658843449809303200592803
• The square root of 640389976597584987 is 800243698.2554657937
• The cube root of 640389976597584987 is 861948.8777870747

Scales and comparisons

• 640,389,976,597,584,987 seconds is equal to 20,362,420,399 years, 28 weeks, 3 days, 16 minutes, 27 seconds.
• To count from 1 to 640,389,976,597,584,987 would take you about sixty-one billion, eighty-seven million, two hundred sixty-one thousand, one hundred ninety-eight 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 640389976597584987 cubic inches would be around 71829.1 feet tall.

Recreational maths with 640389976597584987

• 640389976597584987 backwards is 789485795679983046
• The number of decimal digits it has is: 18
• The sum of 640389976597584987's digits is 114
• More coming soon!