17040839789 has 2 divisors, whose sum is σ = 17040839790. Its totient is φ = 17040839788.

The previous prime is 17040839747. The next prime is 17040839813. The reversal of 17040839789 is 98793804071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16992426025 + 48413764 = 130355^2 + 6958^2 .

It is a cyclic number.

It is not a de Polignac number, because 17040839789 - 2⁸ = 17040839533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17040839489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8520419894 + 8520419895.

It is an arithmetic number, because the mean of its divisors is an integer number (8520419895).

Almost surely, 2^17040839789 is an apocalyptic number.

It is an amenable number.

17040839789 is a deficient number, since it is larger than the sum of its proper divisors (1).

17040839789 is an equidigital number, since it uses as much as digits as its factorization.

17040839789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 17040839789 in words is "seventeen billion, forty million, eight hundred thirty-nine thousand, seven hundred eighty-nine".