674423505324509 has 2 divisors, whose sum is σ = 674423505324510. Its totient is φ = 674423505324508.

The previous prime is 674423505324421. The next prime is 674423505324511. The reversal of 674423505324509 is 905423505324476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494318650625284 + 180104854699225 = 22233278^2 + 13420315^2 .

It is a cyclic number.

It is not a de Polignac number, because 674423505324509 - 2⁸ = 674423505324253 is a prime.

It is a super-3 number, since 3×674423505324509³ (a number of 45 digits) contains 333 as substring.

Together with 674423505324511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674423505324529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337211752662254 + 337211752662255.

It is an arithmetic number, because the mean of its divisors is an integer number (337211752662255).

Almost surely, 2^{674423505324509} is an apocalyptic number.

It is an amenable number.

674423505324509 is a deficient number, since it is larger than the sum of its proper divisors (1).

674423505324509 is an equidigital number, since it uses as much as digits as its factorization.

674423505324509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864000, while the sum is 59.

The spelling of 674423505324509 in words is "six hundred seventy-four trillion, four hundred twenty-three billion, five hundred five million, three hundred twenty-four thousand, five hundred nine".