999995999898 has 16 divisors (see below), whose sum is σ = 2285705142720. Its totient is φ = 285713142816.

The previous prime is 999995999869. The next prime is 999995999903. The reversal of 999995999898 is 898999599999.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11904714243 + ... + 11904714326.

It is an arithmetic number, because the mean of its divisors is an integer number (142856571420).

Almost surely, 2^999995999898 is an apocalyptic number.

999995999898 is an abundant number, since it is smaller than the sum of its proper divisors (1285709142822).

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

999995999898 is a wasteful number, since it uses less digits than its factorization.

999995999898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23809428581.

The product of its digits is 123974556480, while the sum is 102.

The spelling of 999995999898 in words is "nine hundred ninety-nine billion, nine hundred ninety-five million, nine hundred ninety-nine thousand, eight hundred ninety-eight".