17042055517 has 2 divisors, whose sum is σ = 17042055518. Its totient is φ = 17042055516.

The previous prime is 17042055509. The next prime is 17042055533. The reversal of 17042055517 is 71555024071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16615467801 + 426587716 = 128901^2 + 20654^2 .

It is a cyclic number.

It is not a de Polignac number, because 17042055517 - 2³ = 17042055509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17042055577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8521027758 + 8521027759.

It is an arithmetic number, because the mean of its divisors is an integer number (8521027759).

Almost surely, 2^17042055517 is an apocalyptic number.

It is an amenable number.

17042055517 is a deficient number, since it is larger than the sum of its proper divisors (1).

17042055517 is an equidigital number, since it uses as much as digits as its factorization.

17042055517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49000, while the sum is 37.

Adding to 17042055517 its reverse (71555024071), we get a palindrome (88597079588).

The spelling of 17042055517 in words is "seventeen billion, forty-two million, fifty-five thousand, five hundred seventeen".