990992991100 has 36 divisors (see below), whose sum is σ = 2457662619664. Its totient is φ = 339769025280.

The previous prime is 990992991097. The next prime is 990992991139. The reversal of 990992991100 is 1199299099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 707851437 + ... + 707852836.

Almost surely, 2^990992991100 is an apocalyptic number.

It is an amenable number.

990992991100 is an abundant number, since it is smaller than the sum of its proper divisors (1466669628564).

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

990992991100 is a wasteful number, since it uses less digits than its factorization.

990992991100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415704294 (or 1415704287 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 58.

The spelling of 990992991100 in words is "nine hundred ninety billion, nine hundred ninety-two million, nine hundred ninety-one thousand, one hundred".