668881816140

Names of 668881816140

• Cardinal: 668881816140 can be written as Six hundred sixty-eight billion, eight hundred eighty-one million, eight hundred sixteen thousand, one hundred forty.

Scientific notation

• Scientific notation: 6.6888181614 × 10¹¹

Factors of 668881816140

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 13849

Divisors of 668881816140

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 60 557 1114 1671 1733 2228 2785 3342 3466 5199 5570 6684 6932 8355 8665 10398 11140 11549 16710 17330 20796 23098 25995 33420 34647 34660 46196 51990 57745 69294 103980 115490 138588 173235 230980 346470 692940 965281 1930562 2895843 3861124 4826405 5791686 6432793 9652810 11583372 12865586 14479215 19298379 19305620 20014417 25731172 28958430 32163965 38596758 40028834 57916860 60043251 64327930 77193516 80057668 96491895 100072085 120086502 128655860 192983790 200144170 240173004 300216255 385967580 400288340 600432510 1200865020 11148030269 22296060538 33444090807 44592121076 55740151345 66888181614 111480302690 133776363228 167220454035 222960605380 334440908070 668881816140
• Sum of all divisors σ(n): 1877476708800
• Sum of proper divisors (its aliquot sum) s(n): 1208594892660
• 668881816140 is an abundant number, because the sum of its proper divisors (1208594892660) is greater than itself. Its abundance is 539713076520

Bases of 668881816140

• Binary: 1001101110111100011101101000101001001100₂
• Hexadecimal: 0x9BBC768A4C
• Base-36: 8JA2YOGC

Squares and roots of 668881816140

• 668881816140 squared (668881816140²) is 447402883962744764499600
• 668881816140 cubed (668881816140³) is 299259653571274398177769046303544000
• The square root of 668881816140 is 817851.9524583897
• The cube root of 668881816140 is 8745.4695072311

Scales and comparisons

• 668,881,816,140 seconds is equal to 21,268 years, 19 weeks, 2 days, 16 hours, 29 minutes.
• To count from 1 to 668,881,816,140 would take you about forty-two thousand, five hundred thirty-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 668881816140 cubic inches would be around 728.8 feet tall.

Recreational maths with 668881816140

• 668881816140 backwards is 041618188866
• The number of decimal digits it has is: 12
• The sum of 668881816140's digits is 57
• More coming soon!