78500056992 has 48 divisors (see below), whose sum is σ = 235500172992. Its totient is φ = 22428587520.

The previous prime is 78500056979. The next prime is 78500057047. The reversal of 78500056992 is 29965000587.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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, 58407109 + ... + 58408452.

It is an arithmetic number, because the mean of its divisors is an integer number (4906253604).

Almost surely, 2^78500056992 is an apocalyptic number.

It is an amenable number.

78500056992 is an abundant number, since it is smaller than the sum of its proper divisors (157000116000).

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

78500056992 is a wasteful number, since it uses less digits than its factorization.

78500056992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116815581 (or 116815573 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 78500056992 in words is "seventy-eight billion, five hundred million, fifty-six thousand, nine hundred ninety-two".