609495509317 has 2 divisors, whose sum is σ = 609495509318. Its totient is φ = 609495509316.

The previous prime is 609495509269. The next prime is 609495509333. The reversal of 609495509317 is 713905594906.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337544732196 + 271950777121 = 580986^2 + 521489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609495509317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609495569317) 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, 304747754658 + 304747754659.

It is an arithmetic number, because the mean of its divisors is an integer number (304747754659).

Almost surely, 2^609495509317 is an apocalyptic number.

It is an amenable number.

609495509317 is a deficient number, since it is larger than the sum of its proper divisors (1).

609495509317 is an equidigital number, since it uses as much as digits as its factorization.

609495509317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9185400, while the sum is 58.

The spelling of 609495509317 in words is "six hundred nine billion, four hundred ninety-five million, five hundred nine thousand, three hundred seventeen".