78727959896 has 8 divisors (see below), whose sum is σ = 147614924820. Its totient is φ = 39363979944.

The previous prime is 78727959887. The next prime is 78727959907. The reversal of 78727959896 is 69895972787.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920497486 + ... + 4920497501.

Almost surely, 2^78727959896 is an apocalyptic number.

It is an amenable number.

78727959896 is a deficient number, since it is larger than the sum of its proper divisors (68886964924).

78727959896 is a wasteful number, since it uses less digits than its factorization.

78727959896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9840994993 (or 9840994989 counting only the distinct ones).

The product of its digits is 960180480, while the sum is 77.

The spelling of 78727959896 in words is "seventy-eight billion, seven hundred twenty-seven million, nine hundred fifty-nine thousand, eight hundred ninety-six".