198198598220 has 24 divisors (see below), whose sum is σ = 475676636064. Its totient is φ = 67953805056.

The previous prime is 198198598219. The next prime is 198198598231. The reversal of 198198598220 is 22895891891.

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, 707851997 + ... + 707852276.

It is an arithmetic number, because the mean of its divisors is an integer number (19819859836).

Almost surely, 2^198198598220 is an apocalyptic number.

198198598220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198198598220 is an abundant number, since it is smaller than the sum of its proper divisors (277478037844).

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

198198598220 is a wasteful number, since it uses less digits than its factorization.

198198598220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415704289 (or 1415704287 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 62.

The spelling of 198198598220 in words is "one hundred ninety-eight billion, one hundred ninety-eight million, five hundred ninety-eight thousand, two hundred twenty".