138393814527 has 6 divisors (see below), whose sum is σ = 199902176552. Its totient is φ = 92262543012.

The previous prime is 138393814499. The next prime is 138393814549. The reversal of 138393814527 is 725418393831.

138393814527 is a `hidden beast` number, since 1 + 3 + 8 + 39 + 3 + 81 + 4 + 527 = 666.

138393814527 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-138393814527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138393854527) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7688545243 + ... + 7688545260.

Almost surely, 2^138393814527 is an apocalyptic number.

138393814527 is a deficient number, since it is larger than the sum of its proper divisors (61508362025).

138393814527 is a wasteful number, since it uses less digits than its factorization.

138393814527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15377090509 (or 15377090506 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 138393814527 in words is "one hundred thirty-eight billion, three hundred ninety-three million, eight hundred fourteen thousand, five hundred twenty-seven".