79308787128 has 64 divisors (see below), whose sum is σ = 206948736000. Its totient is φ = 25279985280.

The previous prime is 79308787099. The next prime is 79308787133. The reversal of 79308787128 is 82178780397.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2251798 + ... + 2286746.

It is an arithmetic number, because the mean of its divisors is an integer number (3233574000).

Almost surely, 2^79308787128 is an apocalyptic number.

It is an amenable number.

79308787128 is an abundant number, since it is smaller than the sum of its proper divisors (127639948872).

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

79308787128 is a wasteful number, since it uses less digits than its factorization.

79308787128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39092 (or 39088 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 60.

The spelling of 79308787128 in words is "seventy-nine billion, three hundred eight million, seven hundred eighty-seven thousand, one hundred twenty-eight".