642849720513563829

Names of 642849720513563829

• Cardinal: 642849720513563829 can be written as Six hundred forty-two quadrillion, eight hundred forty-nine trillion, seven hundred twenty billion, five hundred thirteen million, five hundred sixty-three thousand, eight hundred twenty-nine.

Scientific notation

• Scientific notation: 6.42849720513563829 × 10¹⁷

Factors of 642849720513563829

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 880

Divisors of 642849720513563829

• Number of divisors d(n): 168
• Complete list of divisors:
  1 3 7 21 31 49 93 147 217 343 651 839 961 1029 1519 2517 2883 4557 5873 6727 10633 17619 20181 26009 29791 31899 41111 47089 78027 89373 123333 141267 182063 208537 287777 329623 546189 625611 703921 806279 863331 923521 988869 1274441 1459759 2111763 2418837 2770563 3823323 4379277 4927447 5643953 6464647 8921087 10218313 14782341 16931859 19393941 21821551 24994649 26763261 28629151 30654939 34492129 39507671 45252529 65464653 74983947 85887453 103476387 118523013 135757587 152750857 174962543 200404057 241444903 276553697 316767703 458252571 524887629 601212171 676468081 724334709 774834119 829661091 887503681 950303109 1069255999 1224737801 1402828399 2029404243 2324502357 2662511043 3207767997 3674213403 4208485197 4735276567 5423838833 6212525767 7484791993 8573164607 9819798793 14205829701 16271516499 18637577301 20970510511 22454375979 24019857689 25719493821 29459396379 33146935969 37966871831 43487680369 62911531533 72059573067 99440807907 113900615493 130463041107 146793573577 168139003823 232028551783 265768102817 304413762583 440380720731 504417011469 650085825841 696085655349 744615588359 797304308451 913241287749 1027555015039 1176973026761 1950257477523 2233846765077 3082665045117 3530919080283 4550600780887 5212309118513 7192885105273 8238811187327 13651802342661 15636927355539 20152660601071 21578655315819 24716433561981 31854205466209 36486163829591 60457981803213 95562616398627 109458491488773 141068624207497 222979438263463 255403146807137 423205872622491 624732478633201 668938314790389 766209440421411 987480369452479 1874197435899603 2962441108357437 4373127350432407 6912362586167353 13119382051297221 20737087758502059 30611891453026849 91835674359080547 214283240171187943 642849720513563829
• Sum of all divisors σ(n): 1034123596414811200
• Sum of proper divisors (its aliquot sum) s(n): 391273875901247371
• 642849720513563829 is a deficient number, because the sum of its proper divisors (391273875901247371) is less than itself. Its deficiency is 251575844612316458

Bases of 642849720513563829

• Binary: 100011101011110111000110101000110011001010111000110010110101₂
• Hexadecimal: 0x8EBDC6A332B8CB5
• Base-36: 4VTR7GNDUQWL

Squares and roots of 642849720513563829

• 642849720513563829 squared (642849720513563829²) is 413255763164367127613303566457141241
• 642849720513563829 cubed (642849720513563829³) is 265661351850832934050426004390794449706387940121771789
• The square root of 642849720513563829 is 801779097.0794660403
• The cube root of 642849720513563829 is 863051.0524138327

Scales and comparisons

• 642,849,720,513,563,829 seconds is equal to 20,440,632,647 years, 30 weeks, 3 days, 19 hours, 17 minutes, 9 seconds.
• To count from 1 to 642,849,720,513,563,829 would take you about sixty-one billion, three hundred twenty-one million, eight hundred ninety-seven thousand, nine hundred forty-two 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 642849720513563829 cubic inches would be around 71920.9 feet tall.

Recreational maths with 642849720513563829

• 642849720513563829 backwards is 928365315027948246
• The number of decimal digits it has is: 18
• The sum of 642849720513563829's digits is 84
• More coming soon!