18978955745826872

Names of 18978955745826872

• Cardinal: 18978955745826872 can be written as Eighteen quadrillion, nine hundred seventy-eight trillion, nine hundred fifty-five billion, seven hundred forty-five million, eight hundred twenty-six thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.8978955745826872 × 10¹⁶

Factors of 18978955745826872

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 256299346

Divisors of 18978955745826872

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 4 8 9617107 19234214 38468428 76936856 246682237 493364474 986728948 1973457896 2372369468228359 4744738936456718 9489477872913436 18978955745826872
• Sum of all divisors σ(n): 35585545867915560
• Sum of proper divisors (its aliquot sum) s(n): 16606590122088688
• 18978955745826872 is a deficient number, because the sum of its proper divisors (16606590122088688) is less than itself. Its deficiency is 2372365623738184

Bases of 18978955745826872

• Binary: 1000011011011010100001001111011011100000001100000111000₂
• Hexadecimal: 0x436D427B701838
• Base-36: 56VH7WKY69K

Squares and roots of 18978955745826872

• 18978955745826872 squared (18978955745826872²) is 360200761202054839215242997304384
• 18978955745826872 cubed (18978955745826872³) is 6836234306466951720345852864272644638153150606848
• The square root of 18978955745826872 is 137764130.8390063919
• The cube root of 18978955745826872 is 266741.6117714853

Scales and comparisons

• 18,978,955,745,826,872 seconds is equal to 603,472,086 years, 49 weeks, 3 days, 18 hours, 34 minutes, 32 seconds.
• To count from 1 to 18,978,955,745,826,872 would take you about one billion, eight hundred ten million, four hundred sixteen thousand, two hundred sixty 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 18978955745826872 cubic inches would be around 22228.5 feet tall.

Recreational maths with 18978955745826872

• 18978955745826872 backwards is 27862854755987981
• The number of decimal digits it has is: 17
• The sum of 18978955745826872's digits is 101
• More coming soon!