77868728996 has 12 divisors (see below), whose sum is σ = 139169643648. Its totient is φ = 38105973672.

The previous prime is 77868728969. The next prime is 77868729019. The reversal of 77868728996 is 69982786877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207097496 + ... + 207097871.

It is an arithmetic number, because the mean of its divisors is an integer number (11597470304).

Almost surely, 2^77868728996 is an apocalyptic number.

It is an amenable number.

77868728996 is a deficient number, since it is larger than the sum of its proper divisors (61300914652).

77868728996 is a wasteful number, since it uses less digits than its factorization.

77868728996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414195418 (or 414195416 counting only the distinct ones).

The product of its digits is 1024192512, while the sum is 77.

The spelling of 77868728996 in words is "seventy-seven billion, eight hundred sixty-eight million, seven hundred twenty-eight thousand, nine hundred ninety-six".