78976431528 has 16 divisors (see below), whose sum is σ = 197441078880. Its totient is φ = 26325477168.

The previous prime is 78976431509. The next prime is 78976431551. The reversal of 78976431528 is 82513467987.

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, 1645342300 + ... + 1645342347.

It is an arithmetic number, because the mean of its divisors is an integer number (12340067430).

Almost surely, 2^78976431528 is an apocalyptic number.

It is an amenable number.

78976431528 is an abundant number, since it is smaller than the sum of its proper divisors (118464647352).

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

78976431528 is a wasteful number, since it uses less digits than its factorization.

78976431528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290684656 (or 3290684652 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 60.

The spelling of 78976431528 in words is "seventy-eight billion, nine hundred seventy-six million, four hundred thirty-one thousand, five hundred twenty-eight".