256742610326 has 16 divisors (see below), whose sum is σ = 395962717248. Its totient is φ = 124778145600.

The previous prime is 256742610317. The next prime is 256742610331. The reversal of 256742610326 is 623016247652.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5754545 + ... + 5798988.

It is an arithmetic number, because the mean of its divisors is an integer number (24747669828).

Almost surely, 2^256742610326 is an apocalyptic number.

256742610326 is a deficient number, since it is larger than the sum of its proper divisors (139220106922).

256742610326 is a wasteful number, since it uses less digits than its factorization.

256742610326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11553847.

The product of its (nonzero) digits is 725760, while the sum is 44.

Adding to 256742610326 its reverse (623016247652), we get a palindrome (879758857978).

It can be divided in two parts, 2567426 and 10326, that added together give a palindrome (2577752).

The spelling of 256742610326 in words is "two hundred fifty-six billion, seven hundred forty-two million, six hundred ten thousand, three hundred twenty-six".