99111987268 has 24 divisors (see below), whose sum is σ = 199097220672. Its totient is φ = 42289441824.

The previous prime is 99111987259. The next prime is 99111987347. The reversal of 99111987268 is 86278911199.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7790371 + ... + 7803082.

It is an arithmetic number, because the mean of its divisors is an integer number (8295717528).

Almost surely, 2^99111987268 is an apocalyptic number.

It is an amenable number.

99111987268 is an abundant number, since it is smaller than the sum of its proper divisors (99985233404).

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

99111987268 is a wasteful number, since it uses less digits than its factorization.

99111987268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15593691 (or 15593689 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 61.

The spelling of 99111987268 in words is "ninety-nine billion, one hundred eleven million, nine hundred eighty-seven thousand, two hundred sixty-eight".