66721742496

Names of 66721742496

• Cardinal: 66721742496 can be written as Sixty-six billion, seven hundred twenty-one million, seven hundred forty-two thousand, four hundred ninety-six.

Scientific notation

• Scientific notation: 6.6721742496 × 10¹⁰

Factors of 66721742496

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2860162

Divisors of 66721742496

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 81 96 108 144 162 216 243 288 324 432 486 648 729 864 972 1296 1458 1944 2592 2916 3888 5832 7776 11664 23328 2860157 5720314 8580471 11440628 17160942 22881256 25741413 34321884 45762512 51482826 68643768 77224239 91525024 102965652 137287536 154448478 205931304 231672717 274575072 308896956 411862608 463345434 617793912 695018151 823725216 926690868 1235587824 1390036302 1853381736 2085054453 2471175648 2780072604 3706763472 4170108906 5560145208 7413526944 8340217812 11120290416 16680435624 22240580832 33360871248 66721742496
• Sum of all divisors σ(n): 196947619722
• Sum of proper divisors (its aliquot sum) s(n): 130225877226
• 66721742496 is an abundant number, because the sum of its proper divisors (130225877226) is greater than itself. Its abundance is 63504134730

Bases of 66721742496

• Binary: 111110001000111011001111111010100000₂
• Hexadecimal: 0xF88ECFEA0
• Base-36: UNGEI00

Squares and roots of 66721742496

• 66721742496 squared (66721742496²) is 4451790921702532310016
• 66721742496 cubed (66721742496³) is 297031247523866858700007593639936
• The square root of 66721742496 is 258305.5216134569
• The cube root of 66721742496 is 4055.9176307631

Scales and comparisons

• 66,721,742,496 seconds is equal to 2,121 years, 28 weeks, 2 days, 9 hours, 21 minutes, 36 seconds.
• To count from 1 to 66,721,742,496 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 66721742496 cubic inches would be around 338 feet tall.

Recreational maths with 66721742496

• 66721742496 backwards is 69424712766
• 66721742496 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 66721742496's digits is 54
• More coming soon!