256236324266 has 16 divisors (see below), whose sum is σ = 414876170184. Its totient is φ = 117989789184.

The previous prime is 256236324263. The next prime is 256236324277. The reversal of 256236324266 is 662423632652.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 131898986041 + 124337338225 = 363179^2 + 352615^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256236324266.

It is not an unprimeable number, because it can be changed into a prime (256236324263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11368931 + ... + 11391446.

Almost surely, 2^256236324266 is an apocalyptic number.

256236324266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256236324266 is a deficient number, since it is larger than the sum of its proper divisors (158639845918).

256236324266 is a wasteful number, since it uses less digits than its factorization.

256236324266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22760825.

The product of its digits is 3732480, while the sum is 47.

The spelling of 256236324266 in words is "two hundred fifty-six billion, two hundred thirty-six million, three hundred twenty-four thousand, two hundred sixty-six".