16513126544017 has 2 divisors, whose sum is σ = 16513126544018. Its totient is φ = 16513126544016.

The previous prime is 16513126543987. The next prime is 16513126544053. The reversal of 16513126544017 is 71044562131561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12709003970961 + 3804122573056 = 3564969^2 + 1950416^2 .

It is a cyclic number.

It is not a de Polignac number, because 16513126544017 - 2⁷ = 16513126543889 is a prime.

It is not a weakly prime, because it can be changed into another prime (16513126544417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8256563272008 + 8256563272009.

It is an arithmetic number, because the mean of its divisors is an integer number (8256563272009).

Almost surely, 2^{16513126544017} is an apocalyptic number.

It is an amenable number.

16513126544017 is a deficient number, since it is larger than the sum of its proper divisors (1).

16513126544017 is an equidigital number, since it uses as much as digits as its factorization.

16513126544017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 46.

Adding to 16513126544017 its reverse (71044562131561), we get a palindrome (87557688675578).

The spelling of 16513126544017 in words is "sixteen trillion, five hundred thirteen billion, one hundred twenty-six million, five hundred forty-four thousand, seventeen".