198561418168 has 16 divisors (see below), whose sum is σ = 372501037080. Its totient is φ = 99227808288.

The previous prime is 198561418141. The next prime is 198561418189. The reversal of 198561418168 is 861814165891.

198561418168 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6596646 + ... + 6626677.

Almost surely, 2^198561418168 is an apocalyptic number.

It is an amenable number.

198561418168 is a deficient number, since it is larger than the sum of its proper divisors (173939618912).

198561418168 is a wasteful number, since it uses less digits than its factorization.

198561418168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13225206 (or 13225202 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 58.

The spelling of 198561418168 in words is "one hundred ninety-eight billion, five hundred sixty-one million, four hundred eighteen thousand, one hundred sixty-eight".