640643335919149488

Names of 640643335919149488

• Cardinal: 640643335919149488 can be written as Six hundred forty quadrillion, six hundred forty-three trillion, three hundred thirty-five billion, nine hundred nineteen million, one hundred forty-nine thousand, four hundred eighty-eight.

Scientific notation

• Scientific notation: 6.40643335919149488 × 10¹⁷

Factors of 640643335919149488

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 175802317914

Divisors of 640643335919149488

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 31 48 62 79 93 124 158 186 237 248 316 372 474 496 632 744 948 961 1264 1488 1896 1922 2449 2883 3792 3844 4898 5766 7347 7688 9796 11532 14694 15376 19592 23064 29388 39184 46128 58776 75919 117552 151838 227757 303676 455514 607352 911028 1214704 1822056 3644112 175802317799 351604635598 527406953397 703209271196 1054813906794 1406418542392 2109627813588 2812837084784 4219255627176 5449871851769 8438511254352 10899743703538 13888383106121 16349615555307 21799487407076 27776766212242 32699231110614 41665149318363 43598974814152 55553532424484 65398462221228 83330298636726 87197949628304 111107064848968 130796924442456 166660597273452 168946027404839 222214129697936 261593848884912 333321194546904 337892054809678 430539876289751 506838082214517 666642389093808 675784109619356 861079752579502 1013676164429034 1291619628869253 1351568219238712 1722159505159004 2027352328858068 2583239257738506 2703136438477424 3444319010318008 4054704657716136 5166478515477012 6888638020636016 8109409315432272 10332957030954024 13346736164982281 20665914061908048 26693472329964562 40040208494946843 53386944659929124 80080416989893686 106773889319858248 160160833979787372 213547778639716496 320321667959574744 640643335919149488
• Sum of all divisors σ(n): 1731751279627968000
• Sum of proper divisors (its aliquot sum) s(n): 1091107943708818512
• 640643335919149488 is an abundant number, because the sum of its proper divisors (1091107943708818512) is greater than itself. Its abundance is 450464607789669024

Bases of 640643335919149488

• Binary: 100011100100000001011011100001000001001011101010000110110000₂
• Hexadecimal: 0x8E405B8412EA1B0
• Base-36: 4V813XK5I2EO

Squares and roots of 640643335919149488

• 640643335919149488 squared (640643335919149488²) is 410423883857616212556560741290662144
• 640643335919149488 cubed (640643335919149488³) is 262935326095436818273003356102383976688622808838582272
• The square root of 640643335919149488 is 800401983.9550308661
• The cube root of 640643335919149488 is 862062.5345677893

Scales and comparisons

• 640,643,335,919,149,488 seconds is equal to 20,370,476,442 years, 14 weeks, 4 days, 3 hours, 44 minutes, 48 seconds.
• To count from 1 to 640,643,335,919,149,488 would take you about sixty-one billion, one hundred eleven million, four hundred twenty-nine thousand, three hundred twenty-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 640643335919149488 cubic inches would be around 71838.5 feet tall.

Recreational maths with 640643335919149488

• 640643335919149488 backwards is 884941919533346046
• The number of decimal digits it has is: 18
• The sum of 640643335919149488's digits is 87
• More coming soon!