642685634994

Names of 642685634994

• Cardinal: 642685634994 can be written as Six hundred forty-two billion, six hundred eighty-five million, six hundred thirty-four thousand, nine hundred ninety-four.

Scientific notation

• Scientific notation: 6.42685634994 × 10¹¹

Factors of 642685634994

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2012

Divisors of 642685634994

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 13 26 39 43 78 86 129 258 313 559 577 626 939 1061 1118 1154 1677 1731 1878 2122 3183 3354 3462 4069 6366 7501 8138 12207 13459 13793 15002 22503 24414 24811 26918 27586 40377 41379 45006 45623 49622 74433 80754 82758 91246 136869 148866 174967 180601 273738 322543 332093 349934 361202 524901 541803 593099 612197 645086 664186 967629 996279 1049802 1083606 1186198 1224394 1779297 1836591 1935258 1992558 2347813 3558594 3673182 4317209 4695626 7043439 7765843 7958561 8634418 12951627 14086878 14279999 15531686 15917122 23297529 23875683 25903254 26324471 28559998 42839997 46595058 47751366 52648942 78973413 85679994 100955959 157946826 185639987 191617661 201911918 302867877 342218123 371279974 383235322 556919961 574852983 605735754 684436246 1026654369 1113839922 1149705966 2053308738 2491029593 4982059186 7473088779 8239559423 14946177558 16479118846 24718678269 49437356538 107114272499 214228544998 321342817497 642685634994
• Sum of all divisors σ(n): 1424767373568
• Sum of proper divisors (its aliquot sum) s(n): 782081738574
• 642685634994 is an abundant number, because the sum of its proper divisors (782081738574) is greater than itself. Its abundance is 139396103580

Bases of 642685634994

• Binary: 1001010110100011000011001000100110110010₂
• Hexadecimal: 0x95A30C89B2
• Base-36: 878UFLPU

Squares and roots of 642685634994

• 642685634994 squared (642685634994²) is 413044825427640997380036
• 642685634994 cubed (642685634994³) is 265457975910949332000655926998579784
• The square root of 642685634994 is 801676.7646589241
• The cube root of 642685634994 is 8629.7761574251

Scales and comparisons

• 642,685,634,994 seconds is equal to 20,435 years, 21 weeks, 4 days, 3 hours, 29 minutes, 54 seconds.
• To count from 1 to 642,685,634,994 would take you about forty thousand, eight hundred seventy 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 642685634994 cubic inches would be around 719.1 feet tall.

Recreational maths with 642685634994

• 642685634994 backwards is 499436586246
• The number of decimal digits it has is: 12
• The sum of 642685634994's digits is 66
• More coming soon!