138989947559121920

Names of 138989947559121920

• Cardinal: 138989947559121920 can be written as One hundred thirty-eight quadrillion, nine hundred eighty-nine trillion, nine hundred forty-seven billion, five hundred fifty-nine million, one hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.3898994755912192 × 10¹⁷

Factors of 138989947559121920

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 27146474132648

Divisors of 138989947559121920

• Number of divisors d(n): 44
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2560 5120 27146474132641 54292948265282 108585896530564 135732370663205 217171793061128 271464741326410 434343586122256 542929482652820 868687172244512 1085858965305640 1737374344489024 2171717930611280 3474748688978048 4343435861222560 6949497377956096 8686871722445120 13898994755912192 17373743444890240 27797989511824384 34747486889780480 69494973779560960 138989947559121920
• Sum of all divisors σ(n): 333412995297109044
• Sum of proper divisors (its aliquot sum) s(n): 194423047737987124
• 138989947559121920 is an abundant number, because the sum of its proper divisors (194423047737987124) is greater than itself. Its abundance is 55433100178865204

Bases of 138989947559121920

• Binary: 111101101110010101001111011110011100111001001010000000000₂
• Hexadecimal: 0x1EDCA9EF39C9400
• Base-36: 120JTOFMLLVK

Squares and roots of 138989947559121920

• 138989947559121920 squared (138989947559121920²) is 19318205522487461367293801424486400
• 138989947559121920 cubed (138989947559121920³) is 2685036372506871726292505569025024694778370981888000
• The square root of 138989947559121920 is 372813556.0291791751
• The cube root of 138989947559121920 is 517997.6589876485

Scales and comparisons

• 138,989,947,559,121,920 seconds is equal to 4,419,450,408 years, 12 weeks, 4 days, 22 hours, 45 minutes, 20 seconds.
• To count from 1 to 138,989,947,559,121,920 would take you about thirteen billion, two hundred fifty-eight million, three hundred fifty-one thousand, two hundred twenty-four 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 138989947559121920 cubic inches would be around 43166.5 feet tall.

Recreational maths with 138989947559121920

• 138989947559121920 backwards is 029121955749989831
• The number of decimal digits it has is: 18
• The sum of 138989947559121920's digits is 92
• More coming soon!