12561700230017 has 2 divisors, whose sum is σ = 12561700230018. Its totient is φ = 12561700230016.

The previous prime is 12561700229989. The next prime is 12561700230151. The reversal of 12561700230017 is 71003200716521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11639314782736 + 922385447281 = 3411644^2 + 960409^2 .

It is a cyclic number.

It is not a de Polignac number, because 12561700230017 - 2¹⁰ = 12561700228993 is a prime.

It is not a weakly prime, because it can be changed into another prime (12561700230517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6280850115008 + 6280850115009.

It is an arithmetic number, because the mean of its divisors is an integer number (6280850115009).

Almost surely, 2^{12561700230017} is an apocalyptic number.

It is an amenable number.

12561700230017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12561700230017 is an equidigital number, since it uses as much as digits as its factorization.

12561700230017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

Adding to 12561700230017 its reverse (71003200716521), we get a palindrome (83564900946538).

The spelling of 12561700230017 in words is "twelve trillion, five hundred sixty-one billion, seven hundred million, two hundred thirty thousand, seventeen".