10991073184 has 432 divisors, whose sum is σ = 29966176800. Its totient is φ = 3940005888.

The previous prime is 10991073169. The next prime is 10991073193. The reversal of 10991073184 is 48137019901.

It is a self number, because there is not a number n which added to its sum of digits gives 10991073184.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 186289347 + ... + 186289405.

It is an arithmetic number, because the mean of its divisors is an integer number (69366150).

Almost surely, 2^10991073184 is an apocalyptic number.

10991073184 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10991073184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14983088400).

10991073184 is an abundant number, since it is smaller than the sum of its proper divisors (18975103616).

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

10991073184 is a wasteful number, since it uses less digits than its factorization.

10991073184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 10991073184 in words is "ten billion, nine hundred ninety-one million, seventy-three thousand, one hundred eighty-four".