198539585663 has 16 divisors (see below), whose sum is σ = 209595794400. Its totient is φ = 187544862720.

The previous prime is 198539585659. The next prime is 198539585749. The reversal of 198539585663 is 366585935891.

It is a cyclic number.

It is not a de Polignac number, because 198539585663 - 2² = 198539585659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198539585593 and 198539585602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198539585863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9403823 + ... + 9424911.

It is an arithmetic number, because the mean of its divisors is an integer number (13099737150).

Almost surely, 2^198539585663 is an apocalyptic number.

198539585663 is a deficient number, since it is larger than the sum of its proper divisors (11056208737).

198539585663 is a wasteful number, since it uses less digits than its factorization.

198539585663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22522.

The product of its digits is 209952000, while the sum is 68.

The spelling of 198539585663 in words is "one hundred ninety-eight billion, five hundred thirty-nine million, five hundred eighty-five thousand, six hundred sixty-three".