9991609192824 has 64 divisors (see below), whose sum is σ = 28603540454400. Its totient is φ = 2849136921984.

The previous prime is 9991609192777. The next prime is 9991609192843. The reversal of 9991609192824 is 4282919061999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58336752 + ... + 58507775.

It is an arithmetic number, because the mean of its divisors is an integer number (446930319600).

Almost surely, 2^{9991609192824} is an apocalyptic number.

It is an amenable number.

9991609192824 is an abundant number, since it is smaller than the sum of its proper divisors (18611931261576).

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

9991609192824 is a wasteful number, since it uses less digits than its factorization.

9991609192824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116845052 (or 116845048 counting only the distinct ones).

The product of its (nonzero) digits is 45349632, while the sum is 69.

The spelling of 9991609192824 in words is "nine trillion, nine hundred ninety-one billion, six hundred nine million, one hundred ninety-two thousand, eight hundred twenty-four".