259643609607 has 4 divisors (see below), whose sum is σ = 346191479480. Its totient is φ = 173095739736.

The previous prime is 259643609569. The next prime is 259643609611. The reversal of 259643609607 is 706906346952.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 259643609607 - 2⁷ = 259643609479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259643609657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43273934932 + ... + 43273934937.

It is an arithmetic number, because the mean of its divisors is an integer number (86547869870).

Almost surely, 2^259643609607 is an apocalyptic number.

259643609607 is a deficient number, since it is larger than the sum of its proper divisors (86547869873).

259643609607 is an equidigital number, since it uses as much as digits as its factorization.

259643609607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86547869872.

The product of its (nonzero) digits is 14696640, while the sum is 57.

The spelling of 259643609607 in words is "two hundred fifty-nine billion, six hundred forty-three million, six hundred nine thousand, six hundred seven".