128179705578 has 32 divisors (see below), whose sum is σ = 261352605696. Its totient is φ = 41900089968.

The previous prime is 128179705561. The next prime is 128179705607. The reversal of 128179705578 is 875507971821.

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, 625276 + ... + 804567.

It is an arithmetic number, because the mean of its divisors is an integer number (8167268928).

Almost surely, 2^128179705578 is an apocalyptic number.

128179705578 is an abundant number, since it is smaller than the sum of its proper divisors (133172900118).

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

128179705578 is a wasteful number, since it uses less digits than its factorization.

128179705578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430138.

The product of its (nonzero) digits is 9878400, while the sum is 60.

The spelling of 128179705578 in words is "one hundred twenty-eight billion, one hundred seventy-nine million, seven hundred five thousand, five hundred seventy-eight".