3256669279967 has 4 divisors (see below), whose sum is σ = 3261830404656. Its totient is φ = 3251508155280.

The previous prime is 3256669279879. The next prime is 3256669279973. The reversal of 3256669279967 is 7699729666523.

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

It is a cyclic number.

It is not a de Polignac number, because 3256669279967 - 2²⁴ = 3256652502751 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 (3256669279267) 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, 2580561398 + ... + 2580562659.

It is an arithmetic number, because the mean of its divisors is an integer number (815457601164).

Almost surely, 2^{3256669279967} is an apocalyptic number.

3256669279967 is a deficient number, since it is larger than the sum of its proper divisors (5161124689).

3256669279967 is an equidigital number, since it uses as much as digits as its factorization.

3256669279967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161124688.

The product of its digits is 2777664960, while the sum is 77.

The spelling of 3256669279967 in words is "three trillion, two hundred fifty-six billion, six hundred sixty-nine million, two hundred seventy-nine thousand, nine hundred sixty-seven".