78008376138 has 64 divisors (see below), whose sum is σ = 194614576128. Its totient is φ = 20251480320.

The previous prime is 78008376113. The next prime is 78008376181. The reversal of 78008376138 is 83167380087.

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 in 31 ways as a sum of consecutive naturals, for example, 875506 + ... + 960482.

It is an arithmetic number, because the mean of its divisors is an integer number (3040852752).

Almost surely, 2^78008376138 is an apocalyptic number.

78008376138 is an abundant number, since it is smaller than the sum of its proper divisors (116606199990).

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

78008376138 is a wasteful number, since it uses less digits than its factorization.

78008376138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86987.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 78008376138 in words is "seventy-eight billion, eight million, three hundred seventy-six thousand, one hundred thirty-eight".