198895195565 has 32 divisors (see below), whose sum is σ = 262055437056. Its totient is φ = 143716584960.

The previous prime is 198895195561. The next prime is 198895195589. The reversal of 198895195565 is 565591598891.

It is not a de Polignac number, because 198895195565 - 2² = 198895195561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198895195561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27119639 + ... + 27126971.

It is an arithmetic number, because the mean of its divisors is an integer number (8189232408).

Almost surely, 2^198895195565 is an apocalyptic number.

It is an amenable number.

198895195565 is a deficient number, since it is larger than the sum of its proper divisors (63160241491).

198895195565 is a wasteful number, since it uses less digits than its factorization.

198895195565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10469.

The product of its digits is 174960000, while the sum is 71.

The spelling of 198895195565 in words is "one hundred ninety-eight billion, eight hundred ninety-five million, one hundred ninety-five thousand, five hundred sixty-five".