12545436352117 has 2 divisors, whose sum is σ = 12545436352118. Its totient is φ = 12545436352116.

The previous prime is 12545436352013. The next prime is 12545436352147. The reversal of 12545436352117 is 71125363454521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12523487633316 + 21948718801 = 3538854^2 + 148151^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545436352117 - 2³⁹ = 11995680538229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12545436352147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272718176058 + 6272718176059.

It is an arithmetic number, because the mean of its divisors is an integer number (6272718176059).

Almost surely, 2^{12545436352117} is an apocalyptic number.

It is an amenable number.

12545436352117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545436352117 is an equidigital number, since it uses as much as digits as its factorization.

12545436352117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024000, while the sum is 49.

The spelling of 12545436352117 in words is "twelve trillion, five hundred forty-five billion, four hundred thirty-six million, three hundred fifty-two thousand, one hundred seventeen".