515469240329 has 2 divisors, whose sum is σ = 515469240330. Its totient is φ = 515469240328.

The previous prime is 515469240283. The next prime is 515469240331. The reversal of 515469240329 is 923042964515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483787020304 + 31682220025 = 695548^2 + 177995^2 .

It is a cyclic number.

It is not a de Polignac number, because 515469240329 - 2¹⁶ = 515469174793 is a prime.

It is a Sophie Germain prime.

Together with 515469240331, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (515469240359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257734620164 + 257734620165.

It is an arithmetic number, because the mean of its divisors is an integer number (257734620165).

Almost surely, 2^515469240329 is an apocalyptic number.

It is an amenable number.

515469240329 is a deficient number, since it is larger than the sum of its proper divisors (1).

515469240329 is an equidigital number, since it uses as much as digits as its factorization.

515469240329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 515469240329 in words is "five hundred fifteen billion, four hundred sixty-nine million, two hundred forty thousand, three hundred twenty-nine".