198198198036 has 36 divisors (see below), whose sum is σ = 508057359264. Its totient is φ = 65135557200.

The previous prime is 198198198013. The next prime is 198198198041. The reversal of 198198198036 is 630891891891.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 38768610 + ... + 38773721.

It is an arithmetic number, because the mean of its divisors is an integer number (14112704424).

Almost surely, 2^198198198036 is an apocalyptic number.

It is an amenable number.

198198198036 is an abundant number, since it is smaller than the sum of its proper divisors (309859161228).

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

198198198036 is a wasteful number, since it uses less digits than its factorization.

198198198036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77542412 (or 77542407 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 63.

The spelling of 198198198036 in words is "one hundred ninety-eight billion, one hundred ninety-eight million, one hundred ninety-eight thousand, thirty-six".