18128168488894465

Names of 18128168488894465

• Cardinal: 18128168488894465 can be written as Eighteen quadrillion, one hundred twenty-eight trillion, one hundred sixty-eight billion, four hundred eighty-eight million, eight hundred ninety-four thousand, four hundred sixty-five.

Scientific notation

• Scientific notation: 1.8128168488894465 × 10¹⁶

Factors of 18128168488894465

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 3162817

Divisors of 18128168488894465

• Number of divisors d(n): 32
• Complete list of divisors:
  1 5 31 155 1399 6995 26669 43369 133345 216845 826739 3134713 4133695 15673565 37309931 97176103 186549655 485880515 1156607861 4385463487 5783039305 21927317435 83599660997 135949368097 417998304985 679746840485 2591589490907 12957947454535 116955925734803 584779628674015 3625633697778893 18128168488894465
• Sum of all divisors σ(n): 22472438655744000
• Sum of proper divisors (its aliquot sum) s(n): 4344270166849535
• 18128168488894465 is a deficient number, because the sum of its proper divisors (4344270166849535) is less than itself. Its deficiency is 13783898322044930

Bases of 18128168488894465

• Binary: 1000000011001110111100100100011001101011000000000000001₂
• Hexadecimal: 0x40677923358001
• Base-36: 4YHWDMUUIO1

Squares and roots of 18128168488894465

• 18128168488894465 squared (18128168488894465²) is 328630492761746230598037907636225
• 18128168488894465 cubed (18128168488894465³) is 5957468943373348583088267533992342589331635994625
• The square root of 18128168488894465 is 134640887.1364655893
• The cube root of 18128168488894465 is 262694.6993395397

Scales and comparisons

• 18,128,168,488,894,465 seconds is equal to 576,419,683 years, 43 weeks, 4 days, 18 hours, 14 minutes, 25 seconds.
• To count from 1 to 18,128,168,488,894,465 would take you about one billion, seven hundred twenty-nine million, two hundred fifty-nine thousand and fifty-one 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 18128168488894465 cubic inches would be around 21891.2 feet tall.

Recreational maths with 18128168488894465

• 18128168488894465 backwards is 56449888486182181
• The number of decimal digits it has is: 17
• The sum of 18128168488894465's digits is 91
• More coming soon!