198294810408128 has 84 divisors (see below), whose sum is σ = 457941591183312. Its totient is φ = 84945085263360.

The previous prime is 198294810408109. The next prime is 198294810408179. The reversal of 198294810408128 is 821804018492891.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7346468 + ... + 21226403.

Almost surely, 2^{198294810408128} is an apocalyptic number.

It is an amenable number.

198294810408128 is an abundant number, since it is smaller than the sum of its proper divisors (259646780775184).

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

198294810408128 is a wasteful number, since it uses less digits than its factorization.

198294810408128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28575110 (or 28575093 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 65.

The spelling of 198294810408128 in words is "one hundred ninety-eight trillion, two hundred ninety-four billion, eight hundred ten million, four hundred eight thousand, one hundred twenty-eight".