13681320861

Names of 13681320861

• Cardinal: 13681320861 can be written as Thirteen billion, six hundred eighty-one million, three hundred twenty thousand, eight hundred sixty-one.

Scientific notation

• Scientific notation: 1.3681320861 × 10¹⁰

Factors of 13681320861

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1658

Divisors of 13681320861

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 13 19 31 39 57 93 247 403 589 601 741 991 1209 1767 1803 2973 7657 7813 11419 12883 18631 18829 22971 23439 30721 34257 38649 55893 56487 92163 148447 242203 244777 353989 399373 445341 583699 595591 726609 734331 1061967 1198119 1751097 1786773 4601857 7588087 7742683 11316229 13805571 18463321 22764261 23228049 33948687 55389963 147110977 240023173 350803099 441332931 720069519 1052409297 4560440287 13681320861
• Sum of all divisors σ(n): 21403074560
• Sum of proper divisors (its aliquot sum) s(n): 7721753699
• 13681320861 is a deficient number, because the sum of its proper divisors (7721753699) is less than itself. Its deficiency is 5959567162

Bases of 13681320861

• Binary: 1100101111011110000110001110011101₂
• Hexadecimal: 0x32F78639D
• Base-36: 6A9I6QL

Squares and roots of 13681320861

• 13681320861 squared (13681320861²) is 187178540501633781321
• 13681320861 cubed (13681320861³) is 2560849670896535656969309437381
• The square root of 13681320861 is 116967.1785630481
• The cube root of 13681320861 is 2391.7145345741

Scales and comparisons

• 13,681,320,861 seconds is equal to 435 years, 1 week, 1 day, 14 hours, 54 minutes, 21 seconds.
• To count from 1 to 13,681,320,861 would take you about eight hundred seventy 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 13681320861 cubic inches would be around 199.3 feet tall.

Recreational maths with 13681320861

• 13681320861 backwards is 16802318631
• 13681320861 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 13681320861's digits is 39
• More coming soon!