138671415248 has 20 divisors (see below), whose sum is σ = 268796041860. Its totient is φ = 69304694784.

The previous prime is 138671415191. The next prime is 138671415257. The reversal of 138671415248 is 842514176831.

138671415248 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 104050114624 + 34621300624 = 322568^2 + 186068^2 .

It is a super-2 number, since 2×138671415248² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138671415196 and 138671415205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1901393 + ... + 1972976.

It is an arithmetic number, because the mean of its divisors is an integer number (13439802093).

Almost surely, 2^138671415248 is an apocalyptic number.

It is an amenable number.

138671415248 is a deficient number, since it is larger than the sum of its proper divisors (130124626612).

138671415248 is a wasteful number, since it uses less digits than its factorization.

138671415248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876614 (or 3876608 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The spelling of 138671415248 in words is "one hundred thirty-eight billion, six hundred seventy-one million, four hundred fifteen thousand, two hundred forty-eight".