78579364892 has 72 divisors (see below), whose sum is σ = 160764990624. Its totient is φ = 33508919808.

The previous prime is 78579364889. The next prime is 78579364933. The reversal of 78579364892 is 29846397587.

It is a happy number.

It is a congruent number.

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, 57482393 + ... + 57483759.

It is an arithmetic number, because the mean of its divisors is an integer number (2232847092).

Almost surely, 2^78579364892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78579364892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80382495312).

78579364892 is an abundant number, since it is smaller than the sum of its proper divisors (82185625732).

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

78579364892 is a wasteful number, since it uses less digits than its factorization.

78579364892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635 (or 2626 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 68.

The spelling of 78579364892 in words is "seventy-eight billion, five hundred seventy-nine million, three hundred sixty-four thousand, eight hundred ninety-two".