509323235929 has 2 divisors, whose sum is σ = 509323235930. Its totient is φ = 509323235928.

The previous prime is 509323235747. The next prime is 509323235947. The reversal of 509323235929 is 929532323905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337035980304 + 172287255625 = 580548^2 + 415075^2 .

It is a cyclic number.

It is not a de Polignac number, because 509323235929 - 2²⁷ = 509189018201 is a prime.

It is not a weakly prime, because it can be changed into another prime (509323235129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254661617964 + 254661617965.

It is an arithmetic number, because the mean of its divisors is an integer number (254661617965).

Almost surely, 2^509323235929 is an apocalyptic number.

It is an amenable number.

509323235929 is a deficient number, since it is larger than the sum of its proper divisors (1).

509323235929 is an equidigital number, since it uses as much as digits as its factorization.

509323235929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3936600, while the sum is 52.

The spelling of 509323235929 in words is "five hundred nine billion, three hundred twenty-three million, two hundred thirty-five thousand, nine hundred twenty-nine".