640529321456920

Names of 640529321456920

• Cardinal: 640529321456920 can be written as Six hundred forty trillion, five hundred twenty-nine billion, three hundred twenty-one million, four hundred fifty-six thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 6.4052932145692 × 10¹⁴

Factors of 640529321456920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1825453

Divisors of 640529321456920

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 7 8 10 14 20 28 35 40 56 70 113 140 226 280 452 565 791 904 1130 1582 2260 3164 3955 4520 6328 7910 11159 15820 22318 31640 44636 55795 78113 89272 111590 156226 223180 312452 390565 446360 624904 781130 1260967 1562260 1814167 2521934 3124520 3628334 5043868 6304835 7256668 8826769 9070835 10087736 12609670 12699169 14513336 17653538 18141670 25219340 25398338 35307076 36283340 44133845 50438680 50796676 63495845 70614152 72566680 88267690 101593352 126991690 176535380 205000871 253983380 353070760 410001742 507966760 820003484 1025004355 1435006097 1640006968 2050008710 2870012194 4100017420 5740024388 7175030485 8200034840 11480048776 14350060970 20244289553 28700121940 40488579106 57400243880 80977158212 101221447765 141710026871 161954316424 202442895530 283420053742 404885791060 566840107484 708550134355 809771582120 1133680214968 1417100268710 2287604719489 2834200537420 4575209438978 5668401074840 9150418877956 11438023597445 16013233036423 18300837755912 22876047194890 32026466072846 45752094389780 64052932145692 80066165182115 91504188779560 128105864291384 160132330364230 320264660728460 640529321456920
• Sum of all divisors σ(n): 1661801109350400
• Sum of proper divisors (its aliquot sum) s(n): 1021271787893480
• 640529321456920 is an abundant number, because the sum of its proper divisors (1021271787893480) is greater than itself. Its abundance is 380742466436560

Bases of 640529321456920

• Binary: 10010001101000111011011010101011000111010100011000₂
• Hexadecimal: 0x2468EDAAC7518
• Base-36: 6B1R3W0NX4

Squares and roots of 640529321456920

• 640529321456920 squared (640529321456920²) is 410277811646062355911415886400
• 640529321456920 cubed (640529321456920³) is 262794968302482350852918365527449281213888000
• The square root of 640529321456920 is 25308680.7529930331
• The cube root of 640529321456920 is 86201.1391483925

Scales and comparisons

• 640,529,321,456,920 seconds is equal to 20,366,851 years, 7 weeks, 3 hours, 48 minutes, 40 seconds.
• To count from 1 to 640,529,321,456,920 would take you about fifty million, nine hundred seventeen thousand, one hundred twenty-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 640529321456920 cubic inches would be around 7183.4 feet tall.

Recreational maths with 640529321456920

• 640529321456920 backwards is 029654123925046
• The number of decimal digits it has is: 15
• The sum of 640529321456920's digits is 58
• More coming soon!