18111017852 has 24 divisors (see below), whose sum is σ = 32284548240. Its totient is φ = 8887512960.

The previous prime is 18111017819. The next prime is 18111017861. The reversal of 18111017852 is 25871011181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30299 + ... + 192717.

It is an arithmetic number, because the mean of its divisors is an integer number (1345189510).

Almost surely, 2^18111017852 is an apocalyptic number.

It is an amenable number.

18111017852 is a deficient number, since it is larger than the sum of its proper divisors (14173530388).

18111017852 is a wasteful number, since it uses less digits than its factorization.

18111017852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162941 (or 162939 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 35.

The spelling of 18111017852 in words is "eighteen billion, one hundred eleven million, seventeen thousand, eight hundred fifty-two".