198387600217 has 32 divisors (see below), whose sum is σ = 217669836800. Its totient is φ = 180115488000.

The previous prime is 198387600197. The next prime is 198387600227. The reversal of 198387600217 is 712006783891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198387600217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198387600227) 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, 29969134 + ... + 29975752.

It is an arithmetic number, because the mean of its divisors is an integer number (6802182400).

Almost surely, 2^198387600217 is an apocalyptic number.

It is an amenable number.

198387600217 is a deficient number, since it is larger than the sum of its proper divisors (19282236583).

198387600217 is a wasteful number, since it uses less digits than its factorization.

198387600217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 198387600217 in words is "one hundred ninety-eight billion, three hundred eighty-seven million, six hundred thousand, two hundred seventeen".