605505556211 has 2 divisors, whose sum is σ = 605505556212. Its totient is φ = 605505556210.

The previous prime is 605505556163. The next prime is 605505556219. The reversal of 605505556211 is 112655505506.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605505556211 is a prime.

It is not a weakly prime, because it can be changed into another prime (605505556219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302752778105 + 302752778106.

It is an arithmetic number, because the mean of its divisors is an integer number (302752778106).

Almost surely, 2^605505556211 is an apocalyptic number.

605505556211 is a deficient number, since it is larger than the sum of its proper divisors (1).

605505556211 is an equidigital number, since it uses as much as digits as its factorization.

605505556211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 605505556211 in words is "six hundred five billion, five hundred five million, five hundred fifty-six thousand, two hundred eleven".