198540195104 has 12 divisors (see below), whose sum is σ = 390876009174. Its totient is φ = 99270097536.

The previous prime is 198540195089. The next prime is 198540195151. The reversal of 198540195104 is 401591045891.

It can be written as a sum of positive squares in only one way, i.e., 137382905104 + 61157290000 = 370652^2 + 247300^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3102190517 + ... + 3102190580.

Almost surely, 2^198540195104 is an apocalyptic number.

It is an amenable number.

198540195104 is a deficient number, since it is larger than the sum of its proper divisors (192335814070).

198540195104 is an equidigital number, since it uses as much as digits as its factorization.

198540195104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204381107 (or 6204381099 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 47.

The spelling of 198540195104 in words is "one hundred ninety-eight billion, five hundred forty million, one hundred ninety-five thousand, one hundred four".