11108985672 has 128 divisors (see below), whose sum is σ = 29470003200. Its totient is φ = 3484954368.

The previous prime is 11108985661. The next prime is 11108985697. The reversal of 11108985672 is 27658980111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4084329 + ... + 4087047.

It is an arithmetic number, because the mean of its divisors is an integer number (230234400).

Almost surely, 2^11108985672 is an apocalyptic number.

11108985672 is a gapful number since it is divisible by the number (12) 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 11108985672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14735001600).

11108985672 is an abundant number, since it is smaller than the sum of its proper divisors (18361017528).

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

11108985672 is a wasteful number, since it uses less digits than its factorization.

11108985672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915 (or 2911 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 48.

The spelling of 11108985672 in words is "eleven billion, one hundred eight million, nine hundred eighty-five thousand, six hundred seventy-two".