18064766203 has 4 divisors (see below), whose sum is σ = 19707017688. Its totient is φ = 16422514720.

The previous prime is 18064766177. The next prime is 18064766207. The reversal of 18064766203 is 30266746081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18064766203 - 2²⁵ = 18031211771 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18064766203.

It is not an unprimeable number, because it can be changed into a prime (18064766207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821125726 + ... + 821125747.

It is an arithmetic number, because the mean of its divisors is an integer number (4926754422).

Almost surely, 2^18064766203 is an apocalyptic number.

18064766203 is a deficient number, since it is larger than the sum of its proper divisors (1642251485).

18064766203 is a wasteful number, since it uses less digits than its factorization.

18064766203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642251484.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 18064766203 in words is "eighteen billion, sixty-four million, seven hundred sixty-six thousand, two hundred three".