12655162305217 has 2 divisors, whose sum is σ = 12655162305218. Its totient is φ = 12655162305216.

The previous prime is 12655162305199. The next prime is 12655162305223. The reversal of 12655162305217 is 71250326155621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8241125181696 + 4414037123521 = 2870736^2 + 2100961^2 .

It is a cyclic number.

It is not a de Polignac number, because 12655162305217 - 2¹⁹ = 12655161780929 is a prime.

It is not a weakly prime, because it can be changed into another prime (12655162305017) 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, 6327581152608 + 6327581152609.

It is an arithmetic number, because the mean of its divisors is an integer number (6327581152609).

Almost surely, 2^{12655162305217} is an apocalyptic number.

It is an amenable number.

12655162305217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12655162305217 is an equidigital number, since it uses as much as digits as its factorization.

12655162305217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 12655162305217 in words is "twelve trillion, six hundred fifty-five billion, one hundred sixty-two million, three hundred five thousand, two hundred seventeen".