11109994956 has 36 divisors (see below), whose sum is σ = 28399152600. Its totient is φ = 3661720128.

The previous prime is 11109994949. The next prime is 11109994993. The reversal of 11109994956 is 65949990111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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, 1730566 + ... + 1736973.

It is an arithmetic number, because the mean of its divisors is an integer number (788865350).

Almost surely, 2^11109994956 is an apocalyptic number.

It is an amenable number.

11109994956 is an abundant number, since it is smaller than the sum of its proper divisors (17289157644).

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

11109994956 is a wasteful number, since it uses less digits than its factorization.

11109994956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467638 (or 3467633 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 54.

The spelling of 11109994956 in words is "eleven billion, one hundred nine million, nine hundred ninety-four thousand, nine hundred fifty-six".