78749652264 has 16 divisors (see below), whose sum is σ = 196874130720. Its totient is φ = 26249884080.

The previous prime is 78749652199. The next prime is 78749652287. The reversal of 78749652264 is 46225694787.

It is a junction number, because it is equal to n+sod(n) for n = 78749652198 and 78749652207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640617732 + ... + 1640617779.

It is an arithmetic number, because the mean of its divisors is an integer number (12304633170).

Almost surely, 2^78749652264 is an apocalyptic number.

It is an amenable number.

78749652264 is an abundant number, since it is smaller than the sum of its proper divisors (118124478456).

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

78749652264 is a wasteful number, since it uses less digits than its factorization.

78749652264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281235520 (or 3281235516 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 60.

The spelling of 78749652264 in words is "seventy-eight billion, seven hundred forty-nine million, six hundred fifty-two thousand, two hundred sixty-four".