256069289226239 has 4 divisors (see below), whose sum is σ = 256652590568880. Its totient is φ = 255485987883600.

The previous prime is 256069289226187. The next prime is 256069289226259. The reversal of 256069289226239 is 932622982960652.

It is a happy number.

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 256069289226239 - 2²⁰ = 256069288177663 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 (256069289226259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291650670662 + ... + 291650671539.

It is an arithmetic number, because the mean of its divisors is an integer number (64163147642220).

Almost surely, 2^{256069289226239} is an apocalyptic number.

256069289226239 is a deficient number, since it is larger than the sum of its proper divisors (583301342641).

256069289226239 is an equidigital number, since it uses as much as digits as its factorization.

256069289226239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583301342640.

The product of its (nonzero) digits is 604661760, while the sum is 71.

The spelling of 256069289226239 in words is "two hundred fifty-six trillion, sixty-nine billion, two hundred eighty-nine million, two hundred twenty-six thousand, two hundred thirty-nine".