18057128781015

Names of 18057128781015

• Cardinal: 18057128781015 can be written as Eighteen trillion, fifty-seven billion, one hundred twenty-eight million, seven hundred eighty-one thousand and fifteen.

Scientific notation

• Scientific notation: 1.8057128781015 × 10¹³

Factors of 18057128781015

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1205013644

Divisors of 18057128781015

• Number of divisors d(n): 40
• Complete list of divisors:
  1 3 5 9 15 27 37 45 81 111 135 185 333 405 555 999 1665 2997 4995 14985 1205013599 3615040797 6025067995 10845122391 18075203985 32535367173 44585503163 54225611955 97606101519 133756509489 162676835865 222927515815 401269528467 488030507595 668782547445 1203808585401 2006347642335 3611425756203 6019042927005 18057128781015
• Sum of all divisors σ(n): 33243915196800
• Sum of proper divisors (its aliquot sum) s(n): 15186786415785
• 18057128781015 is a deficient number, because the sum of its proper divisors (15186786415785) is less than itself. Its deficiency is 2870342365230

Bases of 18057128781015

• Binary: 100000110110001000000101111110010010011010111₂
• Hexadecimal: 0x106C40BF24D7
• Base-36: 6EFBW96FR

Squares and roots of 18057128781015

• 18057128781015 squared (18057128781015²) is 326059899814160259824430225
• 18057128781015 cubed (18057128781015³) is 5887705601269140677519369426671172178375
• The square root of 18057128781015 is 4249368.0448997353
• The cube root of 18057128781015 is 26235.1105430745

Scales and comparisons

• 18,057,128,781,015 seconds is equal to 574,160 years, 43 weeks, 5 days, 1 hour, 50 minutes, 15 seconds.
• To count from 1 to 18,057,128,781,015 would take you about one million, four hundred thirty-five thousand, four hundred two 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 18057128781015 cubic inches would be around 2186.3 feet tall.

Recreational maths with 18057128781015

• 18057128781015 backwards is 51018782175081
• The number of decimal digits it has is: 14
• The sum of 18057128781015's digits is 54
• More coming soon!