18266664852 has 36 divisors (see below), whose sum is σ = 46178190240. Its totient is φ = 6088344912.

The previous prime is 18266664833. The next prime is 18266664887. The reversal of 18266664852 is 25846666281.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 720463 + ... + 745385.

Almost surely, 2^18266664852 is an apocalyptic number.

18266664852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18266664852 is an abundant number, since it is smaller than the sum of its proper divisors (27911525388).

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

18266664852 is a wasteful number, since it uses less digits than its factorization.

18266664852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45292 (or 45287 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 18266664852 in words is "eighteen billion, two hundred sixty-six million, six hundred sixty-four thousand, eight hundred fifty-two".