78539320368 has 60 divisors (see below), whose sum is σ = 219819848040. Its totient is φ = 26177530368.

The previous prime is 78539320283. The next prime is 78539320393. The reversal of 78539320368 is 86302393587.

78539320368 is a `hidden beast` number, since 78 + 539 + 3 + 2 + 0 + 36 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3245080 + ... + 3269192.

It is an arithmetic number, because the mean of its divisors is an integer number (3663664134).

Almost surely, 2^78539320368 is an apocalyptic number.

It is an amenable number.

78539320368 is an abundant number, since it is smaller than the sum of its proper divisors (141280527672).

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

78539320368 is a wasteful number, since it uses less digits than its factorization.

78539320368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46746 (or 46737 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 78539320368 in words is "seventy-eight billion, five hundred thirty-nine million, three hundred twenty thousand, three hundred sixty-eight".