640381398481213837

Names of 640381398481213837

• Cardinal: 640381398481213837 can be written as Six hundred forty quadrillion, three hundred eighty-one trillion, three hundred ninety-eight billion, four hundred eighty-one million, two hundred thirteen thousand, eight hundred thirty-seven.

Scientific notation

• Scientific notation: 6.40381398481213837 × 10¹⁷

Factors of 640381398481213837

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1102205505131267

Divisors of 640381398481213837

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 83 581 1102205505131177 7715438535918239 91483056925887691 640381398481213837
• Sum of all divisors σ(n): 740682099448151616
• Sum of proper divisors (its aliquot sum) s(n): 100300700966937779
• 640381398481213837 is a deficient number, because the sum of its proper divisors (100300700966937779) is less than itself. Its deficiency is 540080697514276058

Bases of 640381398481213837

• Binary: 100011100011000101110111110100110001001111011001100110001101₂
• Hexadecimal: 0x8E3177D313D998D
• Base-36: 4V5G9D5TZ91P

Squares and roots of 640381398481213837

• 640381398481213837 squared (640381398481213837²) is 410088335520755183581575008920262569
• 640381398481213837 cubed (640381398481213837³) is 262612941801614443922601646283149327009120239875967253
• The square root of 640381398481213837 is 800238338.5474691421
• The cube root of 640381398481213837 is 861945.0291265897

Scales and comparisons

• 640,381,398,481,213,837 seconds is equal to 20,362,147,641 years, 50 weeks, 6 days, 17 hours, 10 minutes, 37 seconds.
• To count from 1 to 640,381,398,481,213,837 would take you about sixty-one billion, eighty-six million, four hundred forty-two thousand, nine hundred twenty-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 640381398481213837 cubic inches would be around 71828.8 feet tall.

Recreational maths with 640381398481213837

• 640381398481213837 backwards is 738312184893183046
• The number of decimal digits it has is: 18
• The sum of 640381398481213837's digits is 79
• More coming soon!