18117035120 has 20 divisors (see below), whose sum is σ = 42122106840. Its totient is φ = 7246814016.

The previous prime is 18117035119. The next prime is 18117035203. The reversal of 18117035120 is 2153071181.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113231390 + ... + 113231549.

It is an arithmetic number, because the mean of its divisors is an integer number (2106105342).

Almost surely, 2^18117035120 is an apocalyptic number.

18117035120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18117035120 is an abundant number, since it is smaller than the sum of its proper divisors (24005071720).

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

18117035120 is a wasteful number, since it uses less digits than its factorization.

18117035120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226462952 (or 226462946 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 29.

The spelling of 18117035120 in words is "eighteen billion, one hundred seventeen million, thirty-five thousand, one hundred twenty".