218363349943 has 2 divisors, whose sum is σ = 218363349944. Its totient is φ = 218363349942.

The previous prime is 218363349863. The next prime is 218363349947. The reversal of 218363349943 is 349943363812.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218363349943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218363349947) 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 as a sum of consecutive naturals, namely, 109181674971 + 109181674972.

It is an arithmetic number, because the mean of its divisors is an integer number (109181674972).

Almost surely, 2^218363349943 is an apocalyptic number.

218363349943 is a deficient number, since it is larger than the sum of its proper divisors (1).

218363349943 is an equidigital number, since it uses as much as digits as its factorization.

218363349943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 55.

The spelling of 218363349943 in words is "two hundred eighteen billion, three hundred sixty-three million, three hundred forty-nine thousand, nine hundred forty-three".