198580325864 has 8 divisors (see below), whose sum is σ = 372338111010. Its totient is φ = 99290162928.

The previous prime is 198580325837. The next prime is 198580325873. The reversal of 198580325864 is 468523085891.

It can be written as a sum of positive squares in only one way, i.e., 100825300900 + 97755024964 = 317530^2 + 312658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12411270359 + ... + 12411270374.

Almost surely, 2^198580325864 is an apocalyptic number.

It is an amenable number.

198580325864 is a deficient number, since it is larger than the sum of its proper divisors (173757785146).

198580325864 is a wasteful number, since it uses less digits than its factorization.

198580325864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24822540739 (or 24822540735 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 59.

The spelling of 198580325864 in words is "one hundred ninety-eight billion, five hundred eighty million, three hundred twenty-five thousand, eight hundred sixty-four".