259366266409 has 2 divisors, whose sum is σ = 259366266410. Its totient is φ = 259366266408.

The previous prime is 259366266407. The next prime is 259366266449. The reversal of 259366266409 is 904662663952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259077946009 + 288320400 = 508997^2 + 16980^2 .

It is a cyclic number.

It is not a de Polignac number, because 259366266409 - 2¹ = 259366266407 is a prime.

Together with 259366266407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (259366266407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129683133204 + 129683133205.

It is an arithmetic number, because the mean of its divisors is an integer number (129683133205).

Almost surely, 2^259366266409 is an apocalyptic number.

It is an amenable number.

259366266409 is a deficient number, since it is larger than the sum of its proper divisors (1).

259366266409 is an equidigital number, since it uses as much as digits as its factorization.

259366266409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25194240, while the sum is 58.

The spelling of 259366266409 in words is "two hundred fifty-nine billion, three hundred sixty-six million, two hundred sixty-six thousand, four hundred nine".