18056532066 has 8 divisors (see below), whose sum is σ = 36113064144. Its totient is φ = 6018844020.

The previous prime is 18056532049. The next prime is 18056532077. The reversal of 18056532066 is 66023565081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

18056532066 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504711000 + ... + 1504711011.

It is an arithmetic number, because the mean of its divisors is an integer number (4514133018).

Almost surely, 2^18056532066 is an apocalyptic number.

18056532066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18056532066 is a wasteful number, since it uses less digits than its factorization.

18056532066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009422016.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 18056532066 in words is "eighteen billion, fifty-six million, five hundred thirty-two thousand, sixty-six".