218717074343 has 2 divisors, whose sum is σ = 218717074344. Its totient is φ = 218717074342.

The previous prime is 218717074321. The next prime is 218717074439. The reversal of 218717074343 is 343470717812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218717074343 - 2⁸ = 218717074087 is a prime.

It is a super-2 number, since 2×218717074343² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218717074243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109358537171 + 109358537172.

It is an arithmetic number, because the mean of its divisors is an integer number (109358537172).

Almost surely, 2^218717074343 is an apocalyptic number.

218717074343 is a deficient number, since it is larger than the sum of its proper divisors (1).

218717074343 is an equidigital number, since it uses as much as digits as its factorization.

218717074343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 218717074343 in words is "two hundred eighteen billion, seven hundred seventeen million, seventy-four thousand, three hundred forty-three".