11109331856 has 20 divisors (see below), whose sum is σ = 24599235072. Its totient is φ = 4761142176.

The previous prime is 11109331847. The next prime is 11109331859. The reversal of 11109331856 is 65813390111.

It is not an unprimeable number, because it can be changed into a prime (11109331859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49595120 + ... + 49595343.

Almost surely, 2^11109331856 is an apocalyptic number.

11109331856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11109331856 is an abundant number, since it is smaller than the sum of its proper divisors (13489903216).

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

11109331856 is an equidigital number, since it uses as much as digits as its factorization.

11109331856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99190478 (or 99190472 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 11109331856 in words is "eleven billion, one hundred nine million, three hundred thirty-one thousand, eight hundred fifty-six".