218338369911 has 20 divisors (see below), whose sum is σ = 326172409992. Its totient is φ = 145553280048.

The previous prime is 218338369871. The next prime is 218338369937. The reversal of 218338369911 is 119963833812.

218338369911 is a `hidden beast` number, since 218 + 338 + 3 + 6 + 9 + 91 + 1 = 666.

It is not a de Polignac number, because 218338369911 - 2⁷ = 218338369783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218338369981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3790321 + ... + 3847493.

Almost surely, 2^218338369911 is an apocalyptic number.

218338369911 is a deficient number, since it is larger than the sum of its proper divisors (107834040081).

218338369911 is an equidigital number, since it uses as much as digits as its factorization.

218338369911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104332 (or 104323 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 218338369911 in words is "two hundred eighteen billion, three hundred thirty-eight million, three hundred sixty-nine thousand, nine hundred eleven".