218406097111 has 2 divisors, whose sum is σ = 218406097112. Its totient is φ = 218406097110.

The previous prime is 218406097087. The next prime is 218406097159. The reversal of 218406097111 is 111790604812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218406097111 - 2³¹ = 216258613463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218406097171) 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, 109203048555 + 109203048556.

It is an arithmetic number, because the mean of its divisors is an integer number (109203048556).

Almost surely, 2^218406097111 is an apocalyptic number.

218406097111 is a deficient number, since it is larger than the sum of its proper divisors (1).

218406097111 is an equidigital number, since it uses as much as digits as its factorization.

218406097111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 218406097111 in words is "two hundred eighteen billion, four hundred six million, ninety-seven thousand, one hundred eleven".