18465773516 has 12 divisors (see below), whose sum is σ = 32550981288. Its totient is φ = 9165493152.

The previous prime is 18465773477. The next prime is 18465773533. The reversal of 18465773516 is 61537756481.

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 3 ways as a sum of consecutive naturals, for example, 16847786 + ... + 16848881.

It is an arithmetic number, because the mean of its divisors is an integer number (2712581774).

Almost surely, 2^18465773516 is an apocalyptic number.

It is an amenable number.

18465773516 is a deficient number, since it is larger than the sum of its proper divisors (14085207772).

18465773516 is a wasteful number, since it uses less digits than its factorization.

18465773516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33696808 (or 33696806 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 53.

The spelling of 18465773516 in words is "eighteen billion, four hundred sixty-five million, seven hundred seventy-three thousand, five hundred sixteen".