138835306328 has 8 divisors (see below), whose sum is σ = 260316199380. Its totient is φ = 69417653160.

The previous prime is 138835306307. The next prime is 138835306331. The reversal of 138835306328 is 823603538831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8677206638 + ... + 8677206653.

Almost surely, 2^138835306328 is an apocalyptic number.

It is an amenable number.

138835306328 is a deficient number, since it is larger than the sum of its proper divisors (121480893052).

138835306328 is a wasteful number, since it uses less digits than its factorization.

138835306328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17354413297 (or 17354413293 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 138835306328 in words is "one hundred thirty-eight billion, eight hundred thirty-five million, three hundred six thousand, three hundred twenty-eight".