81683820800

Names of 81683820800

• Cardinal: 81683820800 can be written as Eighty-one billion, six hundred eighty-three million, eight hundred twenty thousand, eight hundred.

Scientific notation

• Scientific notation: 8.16838208 × 10¹⁰

Factors of 81683820800

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 12763104

Divisors of 81683820800

• Number of divisors d(n): 54
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 640 800 1280 1600 3200 6400 12763097 25526194 51052388 63815485 102104776 127630970 204209552 255261940 319077425 408419104 510523880 638154850 816838208 1021047760 1276309700 1633676416 2042095520 2552619400 3267352832 4084191040 5105238800 8168382080 10210477600 16336764160 20420955200 40841910400 81683820800
• Sum of all divisors σ(n): 202180235418
• Sum of proper divisors (its aliquot sum) s(n): 120496414618
• 81683820800 is an abundant number, because the sum of its proper divisors (120496414618) is greater than itself. Its abundance is 38812593818

Bases of 81683820800

• Binary: 1001100000100101111000011000100000000₂
• Hexadecimal: 0x1304BC3100
• Base-36: 11IWFRI8

Squares and roots of 81683820800

• 81683820800 squared (81683820800²) is 6672246580486512640000
• 81683820800 cubed (81683820800³) is 545014594013873075302694912000000
• The square root of 81683820800 is 285803.8152299581
• The cube root of 81683820800 is 4338.8904126821

Scales and comparisons

• 81,683,820,800 seconds is equal to 2,597 years, 15 weeks, 1 day, 14 hours, 13 minutes, 20 seconds.
• To count from 1 to 81,683,820,800 would take you about five thousand, one hundred ninety-four 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 81683820800 cubic inches would be around 361.6 feet tall.

Recreational maths with 81683820800

• 81683820800 backwards is 00802838618
• The number of decimal digits it has is: 11
• The sum of 81683820800's digits is 44
• More coming soon!