18117035356 has 24 divisors (see below), whose sum is σ = 36238962816. Its totient is φ = 7763395440.

The previous prime is 18117035333. The next prime is 18117035383. The reversal of 18117035356 is 65353071181.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 189195 + ... + 268381.

It is an arithmetic number, because the mean of its divisors is an integer number (1509956784).

Almost surely, 2^18117035356 is an apocalyptic number.

It is an amenable number.

18117035356 is an abundant number, since it is smaller than the sum of its proper divisors (18121927460).

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

18117035356 is a wasteful number, since it uses less digits than its factorization.

18117035356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87369 (or 87367 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 18117035356 in words is "eighteen billion, one hundred seventeen million, thirty-five thousand, three hundred fifty-six".