512405430697 has 2 divisors, whose sum is σ = 512405430698. Its totient is φ = 512405430696.

The previous prime is 512405430619. The next prime is 512405430709. The reversal of 512405430697 is 796034504215.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346421707776 + 165983722921 = 588576^2 + 407411^2 .

It is a cyclic number.

It is not a de Polignac number, because 512405430697 - 2⁷ = 512405430569 is a prime.

It is not a weakly prime, because it can be changed into another prime (512405430617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256202715348 + 256202715349.

It is an arithmetic number, because the mean of its divisors is an integer number (256202715349).

Almost surely, 2^512405430697 is an apocalyptic number.

It is an amenable number.

512405430697 is a deficient number, since it is larger than the sum of its proper divisors (1).

512405430697 is an equidigital number, since it uses as much as digits as its factorization.

512405430697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 512405430697 in words is "five hundred twelve billion, four hundred five million, four hundred thirty thousand, six hundred ninety-seven".