11191783880 has 64 divisors (see below), whose sum is σ = 25361424000. Its totient is φ = 4444830720.

The previous prime is 11191783751. The next prime is 11191783891. The reversal of 11191783880 is 8838719111.

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, 4719095 + ... + 4721465.

It is an arithmetic number, because the mean of its divisors is an integer number (396272250).

Almost surely, 2^11191783880 is an apocalyptic number.

11191783880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11191783880 is an abundant number, since it is smaller than the sum of its proper divisors (14169640120).

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

11191783880 is a wasteful number, since it uses less digits than its factorization.

11191783880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174 (or 3170 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 47.

The spelling of 11191783880 in words is "eleven billion, one hundred ninety-one million, seven hundred eighty-three thousand, eight hundred eighty".