809068553017 has 2 divisors, whose sum is σ = 809068553018. Its totient is φ = 809068553016.

The previous prime is 809068552967. The next prime is 809068553023. The reversal of 809068553017 is 710355860908.

809068553017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 805786294336 + 3282258681 = 897656^2 + 57291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-809068553017 is a prime.

It is not a weakly prime, because it can be changed into another prime (809068553077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404534276508 + 404534276509.

It is an arithmetic number, because the mean of its divisors is an integer number (404534276509).

Almost surely, 2^809068553017 is an apocalyptic number.

It is an amenable number.

809068553017 is a deficient number, since it is larger than the sum of its proper divisors (1).

809068553017 is an equidigital number, since it uses as much as digits as its factorization.

809068553017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 809068553017 in words is "eight hundred nine billion, sixty-eight million, five hundred fifty-three thousand, seventeen".