12543202030417 has 2 divisors, whose sum is σ = 12543202030418. Its totient is φ = 12543202030416.

The previous prime is 12543202030379. The next prime is 12543202030441. The reversal of 12543202030417 is 71403020234521.

12543202030417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8710283839761 + 3832918190656 = 2951319^2 + 1957784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12543202030417 is a prime.

It is not a weakly prime, because it can be changed into another prime (12543202031417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271601015208 + 6271601015209.

It is an arithmetic number, because the mean of its divisors is an integer number (6271601015209).

Almost surely, 2^{12543202030417} is an apocalyptic number.

It is an amenable number.

12543202030417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543202030417 is an equidigital number, since it uses as much as digits as its factorization.

12543202030417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 12543202030417 its reverse (71403020234521), we get a palindrome (83946222264938).

The spelling of 12543202030417 in words is "twelve trillion, five hundred forty-three billion, two hundred two million, thirty thousand, four hundred seventeen".