259763689655 has 4 divisors (see below), whose sum is σ = 311716427592. Its totient is φ = 207810951720.

The previous prime is 259763689643. The next prime is 259763689711. The reversal of 259763689655 is 556986367952.

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

It is not a de Polignac number, because 259763689655 - 2⁴ = 259763689639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25976368961 + ... + 25976368970.

It is an arithmetic number, because the mean of its divisors is an integer number (77929106898).

Almost surely, 2^259763689655 is an apocalyptic number.

259763689655 is a deficient number, since it is larger than the sum of its proper divisors (51952737937).

259763689655 is an equidigital number, since it uses as much as digits as its factorization.

259763689655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51952737936.

The product of its digits is 734832000, while the sum is 71.

The spelling of 259763689655 in words is "two hundred fifty-nine billion, seven hundred sixty-three million, six hundred eighty-nine thousand, six hundred fifty-five".