79573552728 has 32 divisors (see below), whose sum is σ = 200032974960. Its totient is φ = 26377971840.

The previous prime is 79573552703. The next prime is 79573552753. The reversal of 79573552728 is 82725537597.

It is an interprime number because it is at equal distance from previous prime (79573552703) and next prime (79573552753).

It is a congruent number.

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, 9154675 + ... + 9163362.

Almost surely, 2^79573552728 is an apocalyptic number.

It is an amenable number.

79573552728 is an abundant number, since it is smaller than the sum of its proper divisors (120459422232).

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

79573552728 is a wasteful number, since it uses less digits than its factorization.

79573552728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318227 (or 18318223 counting only the distinct ones).

The product of its digits is 37044000, while the sum is 60.

The spelling of 79573552728 in words is "seventy-nine billion, five hundred seventy-three million, five hundred fifty-two thousand, seven hundred twenty-eight".