218389620959 has 2 divisors, whose sum is σ = 218389620960. Its totient is φ = 218389620958.

The previous prime is 218389620937. The next prime is 218389620979. The reversal of 218389620959 is 959026983812.

218389620959 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 not a de Polignac number, because 218389620959 - 2⁸ = 218389620703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218389620979) 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, 109194810479 + 109194810480.

It is an arithmetic number, because the mean of its divisors is an integer number (109194810480).

Almost surely, 2^218389620959 is an apocalyptic number.

218389620959 is a deficient number, since it is larger than the sum of its proper divisors (1).

218389620959 is an equidigital number, since it uses as much as digits as its factorization.

218389620959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 218389620959 in words is "two hundred eighteen billion, three hundred eighty-nine million, six hundred twenty thousand, nine hundred fifty-nine".