11100011985 has 40 divisors (see below), whose sum is σ = 19920975360. Its totient is φ = 5913111456.

The previous prime is 11100011971. The next prime is 11100012013. The reversal of 11100011985 is 58911000111.

It is not a de Polignac number, because 11100011985 - 2⁵ = 11100011953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 342096 + ... + 373134.

It is an arithmetic number, because the mean of its divisors is an integer number (498024384).

Almost surely, 2^11100011985 is an apocalyptic number.

11100011985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11100011985 is a deficient number, since it is larger than the sum of its proper divisors (8820963375).

11100011985 is an equidigital number, since it uses as much as digits as its factorization.

11100011985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31939 (or 31930 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 27.

The spelling of 11100011985 in words is "eleven billion, one hundred million, eleven thousand, nine hundred eighty-five".