78897583164 has 24 divisors (see below), whose sum is σ = 190442442960. Its totient is φ = 25392325504.

The previous prime is 78897583147. The next prime is 78897583187. The reversal of 78897583164 is 46138579887.

It is a junction number, because it is equal to n+sod(n) for n = 78897583095 and 78897583104.

It is a congruent number.

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, 113358249 + ... + 113358944.

It is an arithmetic number, because the mean of its divisors is an integer number (7935101790).

Almost surely, 2^78897583164 is an apocalyptic number.

It is an amenable number.

78897583164 is an abundant number, since it is smaller than the sum of its proper divisors (111544859796).

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

78897583164 is a wasteful number, since it uses less digits than its factorization.

78897583164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226717229 (or 226717227 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 66.

The spelling of 78897583164 in words is "seventy-eight billion, eight hundred ninety-seven million, five hundred eighty-three thousand, one hundred sixty-four".