509232228749 has 2 divisors, whose sum is σ = 509232228750. Its totient is φ = 509232228748.

The previous prime is 509232228719. The next prime is 509232228751. The reversal of 509232228749 is 947822232905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496108922500 + 13123306249 = 704350^2 + 114557^2 .

It is a cyclic number.

It is not a de Polignac number, because 509232228749 - 2²⁴ = 509215451533 is a prime.

It is a Sophie Germain prime.

Together with 509232228751, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 509232228749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509232228719) 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, 254616114374 + 254616114375.

It is an arithmetic number, because the mean of its divisors is an integer number (254616114375).

Almost surely, 2^509232228749 is an apocalyptic number.

It is an amenable number.

509232228749 is a deficient number, since it is larger than the sum of its proper divisors (1).

509232228749 is an equidigital number, since it uses as much as digits as its factorization.

509232228749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 509232228749 in words is "five hundred nine billion, two hundred thirty-two million, two hundred twenty-eight thousand, seven hundred forty-nine".