509674543289 has 2 divisors, whose sum is σ = 509674543290. Its totient is φ = 509674543288.

The previous prime is 509674543277. The next prime is 509674543321. The reversal of 509674543289 is 982345476905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347533830400 + 162140712889 = 589520^2 + 402667^2 .

It is a cyclic number.

It is not a de Polignac number, because 509674543289 - 2²⁰ = 509673494713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (509674546289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254837271644 + 254837271645.

It is an arithmetic number, because the mean of its divisors is an integer number (254837271645).

Almost surely, 2^509674543289 is an apocalyptic number.

It is an amenable number.

509674543289 is a deficient number, since it is larger than the sum of its proper divisors (1).

509674543289 is an equidigital number, since it uses as much as digits as its factorization.

509674543289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 509674543289 in words is "five hundred nine billion, six hundred seventy-four million, five hundred forty-three thousand, two hundred eighty-nine".