198171843922608 has 40 divisors (see below), whose sum is σ = 511945795090800. Its totient is φ = 66057040667904.

The previous prime is 198171843922597. The next prime is 198171843922609. The reversal of 198171843922608 is 806229348171891.

It is not an unprimeable number, because it can be changed into a prime (198171843922609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6045898 + ... + 20806166.

It is an arithmetic number, because the mean of its divisors is an integer number (12798644877270).

Almost surely, 2^{198171843922608} is an apocalyptic number.

It is an amenable number.

198171843922608 is an abundant number, since it is smaller than the sum of its proper divisors (313773951168192).

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

198171843922608 is a wasteful number, since it uses less digits than its factorization.

198171843922608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15039989 (or 15039983 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 69.

The spelling of 198171843922608 in words is "one hundred ninety-eight trillion, one hundred seventy-one billion, eight hundred forty-three million, nine hundred twenty-two thousand, six hundred eight".