138384778079066649732

Names of 138384778079066649732

• Cardinal: 138384778079066649732 can be written as One hundred thirty-eight quintillion, three hundred eighty-four quadrillion, seven hundred seventy-eight trillion, seventy-nine billion, sixty-six million, six hundred forty-nine thousand, seven hundred thirty-two.

Scientific notation

• Scientific notation: 1.38384778079066649732 × 10²⁰

Factors of 138384778079066649732

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 549145944758201003

Divisors of 138384778079066649732

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 549145944758200991 1098291889516401982 1647437834274602973 2196583779032803964 3294875668549205946 3844021613307406937 4942313502823808919 6589751337098411892 7688043226614813874 9884627005647617838 11532064839922220811 15376086453229627748 19769254011295235676 23064129679844441622 34596194519766662433 46128259359688883244 69192389039533324866 138384778079066649732
• Sum of all divisors σ(n): 399778247783970322176
• Sum of proper divisors (its aliquot sum) s(n): 261393469704903672444
• 138384778079066649732 is an abundant number, because the sum of its proper divisors (261393469704903672444) is greater than itself. Its abundance is 123008691625837022712

Bases of 138384778079066649732

• Binary: 1111000000001111001011111100111100000001100000001111111010010000100₂
• Hexadecimal: 0x780797E780C07F484
• Base-36: T7DRXQCYC8YH0

Squares and roots of 138384778079066649732

• 138384778079066649732 squared (138384778079066649732²) is 19150346803992525546984694091842775671824
• 138384778079066649732 cubed (138384778079066649732³) is 2650116492607668924476408137867074638774067677530759189551168
• The square root of 138384778079066649732 is 11763705967.0440016371
• The cube root of 138384778079066649732 is 5172447.6894689809

Scales and comparisons

• 138,384,778,079,066,649,732 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 138,384,778,079,066,649,732 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 138384778079066649732 cubic inches would be around 431037.3 feet tall.

Recreational maths with 138384778079066649732

• 138384778079066649732 backwards is 237946660970877483831
• The number of decimal digits it has is: 21
• The sum of 138384778079066649732's digits is 108
• More coming soon!