78108387174 has 48 divisors (see below), whose sum is σ = 182486893680. Its totient is φ = 24064197120.

The previous prime is 78108387163. The next prime is 78108387191. The reversal of 78108387174 is 47178380187.

It is a super-2 number, since 2×78108387174² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78108387174.

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, 2771187 + ... + 2799230.

It is an arithmetic number, because the mean of its divisors is an integer number (3801810285).

Almost surely, 2^78108387174 is an apocalyptic number.

78108387174 is an abundant number, since it is smaller than the sum of its proper divisors (104378506506).

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

78108387174 is a wasteful number, since it uses less digits than its factorization.

78108387174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570485 (or 5570482 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 54.

The spelling of 78108387174 in words is "seventy-eight billion, one hundred eight million, three hundred eighty-seven thousand, one hundred seventy-four".