259461668413 has 4 divisors (see below), whose sum is σ = 261442291968. Its totient is φ = 257481044860.

The previous prime is 259461668393. The next prime is 259461668429. The reversal of 259461668413 is 314866164952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259461668413 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 (259461668483) 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 in 3 ways as a sum of consecutive naturals, for example, 990311581 + ... + 990311842.

It is an arithmetic number, because the mean of its divisors is an integer number (65360572992).

Almost surely, 2^259461668413 is an apocalyptic number.

It is an amenable number.

259461668413 is a deficient number, since it is larger than the sum of its proper divisors (1980623555).

259461668413 is a wasteful number, since it uses less digits than its factorization.

259461668413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980623554.

The product of its digits is 7464960, while the sum is 55.

The spelling of 259461668413 in words is "two hundred fifty-nine billion, four hundred sixty-one million, six hundred sixty-eight thousand, four hundred thirteen".