640740401081802

Names of 640740401081802

• Cardinal: 640740401081802 can be written as Six hundred forty trillion, seven hundred forty billion, four hundred one million, eighty-one thousand, eight hundred two.

Scientific notation

• Scientific notation: 6.40740401081802 × 10¹⁴

Factors of 640740401081802

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 616318449

Divisors of 640740401081802

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 37 42 63 74 111 126 222 223 259 333 446 518 666 669 777 1338 1554 1561 2007 2331 3122 4014 4662 4683 8251 9366 14049 16502 24753 28098 49506 57757 74259 115514 148518 173271 346542 519813 1039626 616318177 1232636354 1848954531 3697909062 4314227239 5546863593 8628454478 11093727186 12942681717 22803772549 25885363434 38828045151 45607545098 68411317647 77656090302 136822635294 137438953471 159626407843 205233952941 274877906942 319252815686 410467905882 412316860413 478879223529 824633720826 957758447058 962072674297 1236950581239 1436637670587 1924145348594 2473901162478 2873275341174 2886218022891 5085241278427 5772436045782 8658654068673 10170482556854 15255723835281 17317308137346 30511447670562 35596688948989 45767171505843 71193377897978 91534343011686 106790066846967 213580133693934 320370200540901 640740401081802
• Sum of all divisors σ(n): 1636783303314432
• Sum of proper divisors (its aliquot sum) s(n): 996042902232630
• 640740401081802 is an abundant number, because the sum of its proper divisors (996042902232630) is greater than itself. Its abundance is 355302501150828

Bases of 640740401081802

• Binary: 10010001101011111111111111111111111110110111001010₂
• Hexadecimal: 0x246BFFFFFEDCA
• Base-36: 6B4G2RDKUI

Squares and roots of 640740401081802

• 640740401081802 squared (640740401081802²) is 410548261578468493571895567204
• 640740401081802 cubed (640740401081802³) is 263054857787224464430764167771581609992421608
• The square root of 640740401081802 is 25312850.5127692405
• The cube root of 640740401081802 is 86210.6069979675

Scales and comparisons

• 640,740,401,081,802 seconds is equal to 20,373,562 years, 42 weeks, 2 days, 8 hours, 56 minutes, 42 seconds.
• To count from 1 to 640,740,401,081,802 would take you about fifty million, nine hundred thirty-three thousand, nine hundred seven 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 640740401081802 cubic inches would be around 7184.2 feet tall.

Recreational maths with 640740401081802

• 640740401081802 backwards is 208180104047046
• The number of decimal digits it has is: 15
• The sum of 640740401081802's digits is 45
• More coming soon!