18142539992483535721

Names of 18142539992483535721

• Cardinal: 18142539992483535721 can be written as Eighteen quintillion, one hundred forty-two quadrillion, five hundred thirty-nine trillion, nine hundred ninety-two billion, four hundred eighty-three million, five hundred thirty-five thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.8142539992483535721 × 10¹⁹

Factors of 18142539992483535721

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1621

Divisors of 18142539992483535721

• Number of divisors d(n): 3
• Complete list of divisors:
  1 1621 2627641
• Sum of all divisors σ(n): 18142539992483537343
• Sum of proper divisors (its aliquot sum) s(n): 1622
• 18142539992483535721 is a deficient number, because the sum of its proper divisors (1622) is less than itself. Its deficiency is 18142539992483534099

Bases of 18142539992483535721

• Binary: 1111101111000111001111111111111111110111010011001001101101101001₂
• Hexadecimal: 0xFBC73FFFF74C9B69
• Base-36: 3TU6POKINFYI1

Squares and roots of 18142539992483535721

• 18142539992483535721 squared (18142539992483535721²) is 329151757378864492375839915257482989841
• 18142539992483535721 cubed (18142539992483535721³) is 5971648921842286780800061069631026876854678159410003610361
• 18142539992483535721 is a perfect square number. Its square root is 4259406061
• 18142539992483535721 is a perfect cube number. Its cube root is 2627641

Scales and comparisons

• 18,142,539,992,483,535,721 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 18,142,539,992,483,535,721 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 18142539992483535721 cubic inches would be around 218970.1 feet tall.

Recreational maths with 18142539992483535721

• 18142539992483535721 backwards is 12753538429993524181
• The number of decimal digits it has is: 20
• The sum of 18142539992483535721's digits is 91
• More coming soon!