668663916800

Names of 668663916800

• Cardinal: 668663916800 can be written as Six hundred sixty-eight billion, six hundred sixty-three million, nine hundred sixteen thousand, eight hundred.

Scientific notation

• Scientific notation: 6.686639168 × 10¹¹

Factors of 668663916800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 9498085

Divisors of 668663916800

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 25 32 40 44 50 55 64 80 88 100 110 128 160 176 200 220 256 275 320 352 400 440 550 640 704 800 880 1100 1280 1408 1600 1760 2200 2816 3200 3520 4400 6400 7040 8800 14080 17600 35200 70400 9498067 18996134 37992268 47490335 75984536 94980670 104478737 151969072 189961340 208957474 237451675 303938144 379922680 417914948 474903350 522393685 607876288 759845360 835829896 949806700 1044787370 1215752576 1519690720 1671659792 1899613400 2089574740 2431505152 2611968425 3039381440 3343319584 3799226800 4179149480 5223936850 6078762880 6686639168 7598453600 8358298960 10447873700 12157525760 13373278336 15196907200 16716597920 20895747400 26746556672 30393814400 33433195840 41791494800 60787628800 66866391680 83582989600 133732783360 167165979200 334331958400 668663916800
• Sum of all divisors σ(n): 1805506742256
• Sum of proper divisors (its aliquot sum) s(n): 1136842825456
• 668663916800 is an abundant number, because the sum of its proper divisors (1136842825456) is greater than itself. Its abundance is 468178908656

Bases of 668663916800

• Binary: 1001101110101111011110011010100100000000₂
• Hexadecimal: 0x9BAF79A900
• Base-36: 8J6H8C8W

Squares and roots of 668663916800

• 668663916800 squared (668663916800²) is 447111433630317322240000
• 668663916800 cubed (668663916800³) is 298967282457311223915886149632000000
• The square root of 668663916800 is 817718.7271916915
• The cube root of 668663916800 is 8744.5197435333

Scales and comparisons

• 668,663,916,800 seconds is equal to 21,261 years, 23 weeks, 16 hours, 53 minutes, 20 seconds.
• To count from 1 to 668,663,916,800 would take you about forty-two thousand, five hundred twenty-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 668663916800 cubic inches would be around 728.7 feet tall.

Recreational maths with 668663916800

• 668663916800 backwards is 008619366866
• The number of decimal digits it has is: 12
• The sum of 668663916800's digits is 59
• More coming soon!