78935642604 has 72 divisors (see below), whose sum is σ = 245577564960. Its totient is φ = 20818190592.

The previous prime is 78935642593. The next prime is 78935642609. The reversal of 78935642604 is 40624653987.

78935642604 is a `hidden beast` number, since 78 + 9 + 3 + 564 + 2 + 6 + 0 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (78935642609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12044289 + ... + 12050840.

Almost surely, 2^78935642604 is an apocalyptic number.

It is an amenable number.

78935642604 is an abundant number, since it is smaller than the sum of its proper divisors (166641922356).

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

78935642604 is a wasteful number, since it uses less digits than its factorization.

78935642604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24095159 (or 24095154 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 78935642604 in words is "seventy-eight billion, nine hundred thirty-five million, six hundred forty-two thousand, six hundred four".