998560065899 has 16 divisors (see below), whose sum is σ = 1124520883200. Its totient is φ = 878465244000.

The previous prime is 998560065889. The next prime is 998560065931.

998560065899 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 998560065899 - 2²⁴ = 998543288683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998560065889) 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 15 ways as a sum of consecutive naturals, for example, 14594429 + ... + 14662689.

It is an arithmetic number, because the mean of its divisors is an integer number (70282555200).

Almost surely, 2^998560065899 is an apocalyptic number.

998560065899 is a deficient number, since it is larger than the sum of its proper divisors (125960817301).

998560065899 is a wasteful number, since it uses less digits than its factorization.

998560065899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111202.

The product of its (nonzero) digits is 377913600, while the sum is 74.

The spelling of 998560065899 in words is "nine hundred ninety-eight billion, five hundred sixty million, sixty-five thousand, eight hundred ninety-nine".