491039688321702081

Names of 491039688321702081

• Cardinal: 491039688321702081 can be written as Four hundred ninety-one quadrillion, thirty-nine trillion, six hundred eighty-eight billion, three hundred twenty-one million, seven hundred two thousand and eighty-one.

Scientific notation

• Scientific notation: 4.91039688321702081 × 10¹⁷

Factors of 491039688321702081

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 77860252

Divisors of 491039688321702081

• Number of divisors d(n): 15
• Complete list of divisors:
  1 3 9 27 81 77860249 233580747 700742241 2102226723 6306680169 6062218374342001 18186655123026003 54559965369078009 163679896107234027 491039688321702081
• Sum of all divisors σ(n): 733528432716472371
• Sum of proper divisors (its aliquot sum) s(n): 242488744394770290
• 491039688321702081 is a deficient number, because the sum of its proper divisors (242488744394770290) is less than itself. Its deficiency is 248550943926931791

Bases of 491039688321702081

• Binary: 11011010000100001011111111010110001000010001001100011000001₂
• Hexadecimal: 0x6D085FEB10898C1
• Base-36: 3QAZ1IN1P329

Squares and roots of 491039688321702081

• 491039688321702081 squared (491039688321702081²) is 241119975507074323069873684919730561
• 491039688321702081 cubed (491039688321702081³) is 118399477621130215284336816395639472563320607432997441
• 491039688321702081 is a perfect square number. Its square root is 700742241
• The cube root of 491039688321702081 is 788930.7161042619

Scales and comparisons

• 491,039,688,321,702,081 seconds is equal to 15,613,543,203 years, 7 weeks, 4 days, 15 hours, 1 minute, 21 seconds.
• To count from 1 to 491,039,688,321,702,081 would take you about forty-six billion, eight hundred forty million, six hundred twenty-nine thousand, six hundred 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 491039688321702081 cubic inches would be around 65744.2 feet tall.

Recreational maths with 491039688321702081

• 491039688321702081 backwards is 180207123886930194
• The number of decimal digits it has is: 18
• The sum of 491039688321702081's digits is 72
• More coming soon!