259648504469 has 2 divisors, whose sum is σ = 259648504470. Its totient is φ = 259648504468.

The previous prime is 259648504457. The next prime is 259648504529. The reversal of 259648504469 is 964405846952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200669953444 + 58978551025 = 447962^2 + 242855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259648504469 is a prime.

It is a super-2 number, since 2×259648504469² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259648503469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129824252234 + 129824252235.

It is an arithmetic number, because the mean of its divisors is an integer number (129824252235).

Almost surely, 2^259648504469 is an apocalyptic number.

It is an amenable number.

259648504469 is a deficient number, since it is larger than the sum of its proper divisors (1).

259648504469 is an equidigital number, since it uses as much as digits as its factorization.

259648504469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74649600, while the sum is 62.

The spelling of 259648504469 in words is "two hundred fifty-nine billion, six hundred forty-eight million, five hundred four thousand, four hundred sixty-nine".