11191805860 has 48 divisors (see below), whose sum is σ = 24324572160. Its totient is φ = 4320337280.

The previous prime is 11191805851. The next prime is 11191805903. The reversal of 11191805860 is 6850819111.

11191805860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2042925 + ... + 2048395.

It is an arithmetic number, because the mean of its divisors is an integer number (506761920).

Almost surely, 2^11191805860 is an apocalyptic number.

11191805860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11191805860 is an abundant number, since it is smaller than the sum of its proper divisors (13132766300).

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

11191805860 is a wasteful number, since it uses less digits than its factorization.

11191805860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9036 (or 9034 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 40.

The spelling of 11191805860 in words is "eleven billion, one hundred ninety-one million, eight hundred five thousand, eight hundred sixty".