18000300056 has 8 divisors (see below), whose sum is σ = 33750562620. Its totient is φ = 9000150024.

The previous prime is 18000300053. The next prime is 18000300061. The reversal of 18000300056 is 65000300081.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000300053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125018746 + ... + 1125018761.

Almost surely, 2^18000300056 is an apocalyptic number.

It is an amenable number.

18000300056 is a deficient number, since it is larger than the sum of its proper divisors (15750262564).

18000300056 is a wasteful number, since it uses less digits than its factorization.

18000300056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250037513 (or 2250037509 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 18000300056 in words is "eighteen billion, three hundred thousand, fifty-six".