138915725796 has 27 divisors (see below), whose sum is σ = 351153737571. Its totient is φ = 46304496504.

The previous prime is 138915725693. The next prime is 138915725803. The reversal of 138915725796 is 697527519831.

The square root of 138915725796 is 372714.

It is a perfect power (a square), and thus also a powerful number.

138915725796 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 1 + 57 + 2 + 579 + 6 = 666.

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 8 ways as a sum of consecutive naturals, for example, 2205225 + ... + 2267343.

Almost surely, 2^138915725796 is an apocalyptic number.

138915725796 is the 372714-th square number.

It is an amenable number.

138915725796 is an abundant number, since it is smaller than the sum of its proper divisors (212238011775).

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

138915725796 is an frugal number, since it uses more digits than its factorization.

138915725796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124248 (or 62124 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 63.

The spelling of 138915725796 in words is "one hundred thirty-eight billion, nine hundred fifteen million, seven hundred twenty-five thousand, seven hundred ninety-six".