66720716940

Names of 66720716940

• Cardinal: 66720716940 can be written as Sixty-six billion, seven hundred twenty million, seven hundred sixteen thousand, nine hundred forty.

Scientific notation

• Scientific notation: 6.672071694 × 10¹⁰

Factors of 66720716940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 699029

Divisors of 66720716940

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 37 43 60 74 86 111 129 148 172 185 215 222 258 370 430 444 516 555 645 740 860 1110 1290 1591 2220 2580 3182 4773 6364 7955 9546 15910 19092 23865 31820 47730 95460 698939 1397878 2096817 2795756 3494695 4193634 6989390 8387268 10484085 13978780 20968170 25860743 30054377 41936340 51721486 60108754 77582229 90163131 103442972 120217508 129303715 150271885 155164458 180326262 258607430 300543770 310328916 360652524 387911145 450815655 517214860 601087540 775822290 901631310 1112011949 1551644580 1803262620 2224023898 3336035847 4448047796 5560059745 6672071694 11120119490 13344143388 16680179235 22240238980 33360358470 66720716940
• Sum of all divisors σ(n): 196329450240
• Sum of proper divisors (its aliquot sum) s(n): 129608733300
• 66720716940 is an abundant number, because the sum of its proper divisors (129608733300) is greater than itself. Its abundance is 62888016360

Bases of 66720716940

• Binary: 111110001000110111010101100010001100₂
• Hexadecimal: 0xF88DD588C
• Base-36: UNFSIOC

Squares and roots of 66720716940

• 66720716940 squared (66720716940²) is 4451654068987602963600
• 66720716940 cubed (66720716940³) is 297017551051721089703460723384000
• The square root of 66720716940 is 258303.5364450127
• The cube root of 66720716940 is 4055.8968499711

Scales and comparisons

• 66,720,716,940 seconds is equal to 2,121 years, 26 weeks, 4 days, 12 hours, 29 minutes.
• To count from 1 to 66,720,716,940 would take you about four thousand, two hundred forty-three 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 66720716940 cubic inches would be around 338 feet tall.

Recreational maths with 66720716940

• 66720716940 backwards is 04961702766
• The number of decimal digits it has is: 11
• The sum of 66720716940's digits is 48
• More coming soon!