138817670274 has 24 divisors (see below), whose sum is σ = 301305871152. Its totient is φ = 46190364120.

The previous prime is 138817670261. The next prime is 138817670297. The reversal of 138817670274 is 472076718831.

138817670274 is a `hidden beast` number, since 1 + 388 + 176 + 70 + 27 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 138817670274.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6838972 + ... + 6859239.

It is an arithmetic number, because the mean of its divisors is an integer number (12554411298).

Almost surely, 2^138817670274 is an apocalyptic number.

138817670274 is an abundant number, since it is smaller than the sum of its proper divisors (162488200878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138817670274 is a wasteful number, since it uses less digits than its factorization.

138817670274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13698782 (or 13698779 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 138817670274 in words is "one hundred thirty-eight billion, eight hundred seventeen million, six hundred seventy thousand, two hundred seventy-four".