78906594916 has 12 divisors (see below), whose sum is σ = 138089036988. Its totient is φ = 39452584352.

The previous prime is 78906594853. The next prime is 78906594979. The reversal of 78906594916 is 61949560987.

It is an interprime number because it is at equal distance from previous prime (78906594853) and next prime (78906594979).

It can be written as a sum of positive squares in 2 ways, for example, as 51765350400 + 27141244516 = 227520^2 + 164746^2 .

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, 129870 + ... + 417946.

It is an arithmetic number, because the mean of its divisors is an integer number (11507419749).

Almost surely, 2^78906594916 is an apocalyptic number.

It is an amenable number.

78906594916 is a deficient number, since it is larger than the sum of its proper divisors (59182442072).

78906594916 is a wasteful number, since it uses less digits than its factorization.

78906594916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356558 (or 356556 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 64.

The spelling of 78906594916 in words is "seventy-eight billion, nine hundred six million, five hundred ninety-four thousand, nine hundred sixteen".