218178004559 has 2 divisors, whose sum is σ = 218178004560. Its totient is φ = 218178004558.

The previous prime is 218178004507. The next prime is 218178004571. The reversal of 218178004559 is 955400871812.

218178004559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218178004559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218178004589) 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, 109089002279 + 109089002280.

It is an arithmetic number, because the mean of its divisors is an integer number (109089002280).

Almost surely, 2^218178004559 is an apocalyptic number.

218178004559 is a deficient number, since it is larger than the sum of its proper divisors (1).

218178004559 is an equidigital number, since it uses as much as digits as its factorization.

218178004559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 50.

The spelling of 218178004559 in words is "two hundred eighteen billion, one hundred seventy-eight million, four thousand, five hundred fifty-nine".