491384342979158161

Names of 491384342979158161

• Cardinal: 491384342979158161 can be written as Four hundred ninety-one quadrillion, three hundred eighty-four trillion, three hundred forty-two billion, nine hundred seventy-nine million, one hundred fifty-eight thousand, one hundred sixty-one.

Scientific notation

• Scientific notation: 4.91384342979158161 × 10¹⁷

Factors of 491384342979158161

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 605969

Divisors of 491384342979158161

• Number of divisors d(n): 27
• Complete list of divisors:
  1 13 89 169 1157 7921 15041 102973 605867 1338649 7876271 53922163 102391523 700988119 4799072507 9112845547 62387942591 367074821689 811043253683 4771972681957 32669659130321 62035644865441 424705568694173 2907599662598569 5521172393024249 37798795613781397 491384342979158161
• Sum of all divisors σ(n): 538137348779120241
• Sum of proper divisors (its aliquot sum) s(n): 46753005799962080
• 491384342979158161 is a deficient number, because the sum of its proper divisors (46753005799962080) is less than itself. Its deficiency is 444631337179196081

Bases of 491384342979158161

• Binary: 11011010001101111110111010011011011011101100010000010010001₂
• Hexadecimal: 0x6D1BF74DB762091
• Base-36: 3QED7MSY0YHD

Squares and roots of 491384342979158161

• 491384342979158161 squared (491384342979158161²) is 241458572525058942272580828252901921
• 491384342979158161 cubed (491384342979158161³) is 118648962016911498691149955265092624557089269879727281
• 491384342979158161 is a perfect square number. Its square root is 700988119
• The cube root of 491384342979158161 is 789115.2531593729

Scales and comparisons

• 491,384,342,979,158,161 seconds is equal to 15,624,502,155 years, 8 weeks, 4 days, 23 hours, 56 minutes, 1 second.
• To count from 1 to 491,384,342,979,158,161 would take you about forty-six billion, eight hundred seventy-three million, five hundred six thousand, four hundred sixty-five 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 491384342979158161 cubic inches would be around 65759.6 feet tall.

Recreational maths with 491384342979158161

• 491384342979158161 backwards is 161851979243483194
• The number of decimal digits it has is: 18
• The sum of 491384342979158161's digits is 85
• More coming soon!