18000085000217 has 2 divisors, whose sum is σ = 18000085000218. Its totient is φ = 18000085000216.

The previous prime is 18000085000213. The next prime is 18000085000229. The reversal of 18000085000217 is 71200058000081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17791152817936 + 208932182281 = 4217956^2 + 457091^2 .

It is a cyclic number.

It is not a de Polignac number, because 18000085000217 - 2² = 18000085000213 is a prime.

It is not a weakly prime, because it can be changed into another prime (18000085000213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9000042500108 + 9000042500109.

It is an arithmetic number, because the mean of its divisors is an integer number (9000042500109).

Almost surely, 2^{18000085000217} is an apocalyptic number.

It is an amenable number.

18000085000217 is a deficient number, since it is larger than the sum of its proper divisors (1).

18000085000217 is an equidigital number, since it uses as much as digits as its factorization.

18000085000217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 32.

The spelling of 18000085000217 in words is "eighteen trillion, eighty-five million, two hundred seventeen", and thus it is an aban number.