198539585601 has 32 divisors (see below), whose sum is σ = 326376822528. Its totient is φ = 104762910720.

The previous prime is 198539585593. The next prime is 198539585617. The reversal of 198539585601 is 106585935891.

It is not a de Polignac number, because 198539585601 - 2³ = 198539585593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198539585201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5227620 + ... + 5265461.

It is an arithmetic number, because the mean of its divisors is an integer number (10199275704).

Almost surely, 2^198539585601 is an apocalyptic number.

It is an amenable number.

198539585601 is a deficient number, since it is larger than the sum of its proper divisors (127837236927).

198539585601 is a wasteful number, since it uses less digits than its factorization.

198539585601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10493161.

The product of its (nonzero) digits is 11664000, while the sum is 60.

The spelling of 198539585601 in words is "one hundred ninety-eight billion, five hundred thirty-nine million, five hundred eighty-five thousand, six hundred one".