78478630794 has 48 divisors (see below), whose sum is σ = 173691692928. Its totient is φ = 25597525056.

The previous prime is 78478630781. The next prime is 78478630817. The reversal of 78478630794 is 49703687487.

78478630794 is a `hidden beast` number, since 78 + 478 + 6 + 3 + 0 + 7 + 94 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6607249 + ... + 6619115.

It is an arithmetic number, because the mean of its divisors is an integer number (3618576936).

Almost surely, 2^78478630794 is an apocalyptic number.

78478630794 is an abundant number, since it is smaller than the sum of its proper divisors (95213062134).

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

78478630794 is a wasteful number, since it uses less digits than its factorization.

78478630794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19739 (or 19736 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 63.

The spelling of 78478630794 in words is "seventy-eight billion, four hundred seventy-eight million, six hundred thirty thousand, seven hundred ninety-four".