78097671564 has 48 divisors (see below), whose sum is σ = 199824159360. Its totient is φ = 23543331840.

The previous prime is 78097671511. The next prime is 78097671601. The reversal of 78097671564 is 46517679087.

It is a junction number, because it is equal to n+sod(n) for n = 78097671498 and 78097671507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507294 + ... + 1558245.

It is an arithmetic number, because the mean of its divisors is an integer number (4163003320).

Almost surely, 2^78097671564 is an apocalyptic number.

It is an amenable number.

78097671564 is an abundant number, since it is smaller than the sum of its proper divisors (121726487796).

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

78097671564 is a wasteful number, since it uses less digits than its factorization.

78097671564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065750 (or 3065748 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 78097671564 in words is "seventy-eight billion, ninety-seven million, six hundred seventy-one thousand, five hundred sixty-four".