78904789184 has 56 divisors (see below), whose sum is σ = 175952444640. Its totient is φ = 34834212864.

The previous prime is 78904789177. The next prime is 78904789199. The reversal of 78904789184 is 48198740987.

It is a self number, because there is not a number n which added to its sum of digits gives 78904789184.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042549 + ... + 2080820.

It is an arithmetic number, because the mean of its divisors is an integer number (3142007940).

Almost surely, 2^78904789184 is an apocalyptic number.

It is an amenable number.

78904789184 is an abundant number, since it is smaller than the sum of its proper divisors (97047655456).

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

78904789184 is a wasteful number, since it uses less digits than its factorization.

78904789184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123417 (or 4123407 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 65.

The spelling of 78904789184 in words is "seventy-eight billion, nine hundred four million, seven hundred eighty-nine thousand, one hundred eighty-four".