13125444501517 has 2 divisors, whose sum is σ = 13125444501518. Its totient is φ = 13125444501516.

The previous prime is 13125444501511. The next prime is 13125444501527. The reversal of 13125444501517 is 71510544452131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13019208269796 + 106236231721 = 3608214^2 + 325939^2 .

It is a cyclic number.

It is not a de Polignac number, because 13125444501517 - 2³¹ = 13123297017869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13125444501511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562722250758 + 6562722250759.

It is an arithmetic number, because the mean of its divisors is an integer number (6562722250759).

Almost surely, 2^{13125444501517} is an apocalyptic number.

It is an amenable number.

13125444501517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13125444501517 is an equidigital number, since it uses as much as digits as its factorization.

13125444501517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 43.

Adding to 13125444501517 its reverse (71510544452131), we get a palindrome (84635988953648).

The spelling of 13125444501517 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty-four million, five hundred one thousand, five hundred seventeen".