17128361249 has 2 divisors, whose sum is σ = 17128361250. Its totient is φ = 17128361248.

The previous prime is 17128361191. The next prime is 17128361267. The reversal of 17128361249 is 94216382171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11282688400 + 5845672849 = 106220^2 + 76457^2 .

It is a cyclic number.

It is not a de Polignac number, because 17128361249 - 2²⁰ = 17127312673 is a prime.

It is not a weakly prime, because it can be changed into another prime (17128361279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8564180624 + 8564180625.

It is an arithmetic number, because the mean of its divisors is an integer number (8564180625).

Almost surely, 2^17128361249 is an apocalyptic number.

It is an amenable number.

17128361249 is a deficient number, since it is larger than the sum of its proper divisors (1).

17128361249 is an equidigital number, since it uses as much as digits as its factorization.

17128361249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The spelling of 17128361249 in words is "seventeen billion, one hundred twenty-eight million, three hundred sixty-one thousand, two hundred forty-nine".