218118625867 has 2 divisors, whose sum is σ = 218118625868. Its totient is φ = 218118625866.

The previous prime is 218118625849. The next prime is 218118625873. The reversal of 218118625867 is 768526811812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 218118625867 - 2¹¹ = 218118623819 is a prime.

It is not a weakly prime, because it can be changed into another prime (218118626867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109059312933 + 109059312934.

It is an arithmetic number, because the mean of its divisors is an integer number (109059312934).

Almost surely, 2^218118625867 is an apocalyptic number.

218118625867 is a deficient number, since it is larger than the sum of its proper divisors (1).

218118625867 is an equidigital number, since it uses as much as digits as its factorization.

218118625867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 55.

The spelling of 218118625867 in words is "two hundred eighteen billion, one hundred eighteen million, six hundred twenty-five thousand, eight hundred sixty-seven".