256266051113 has 4 divisors (see below), whose sum is σ = 256299266820. Its totient is φ = 256232835408.

The previous prime is 256266051077. The next prime is 256266051121. The reversal of 256266051113 is 311150662652.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47204949289 + 209061101824 = 217267^2 + 457232^2 .

It is a cyclic number.

It is not a de Polignac number, because 256266051113 - 2²⁰ = 256265002537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256266051163) 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, 16596278 + ... + 16611711.

It is an arithmetic number, because the mean of its divisors is an integer number (64074816705).

Almost surely, 2^256266051113 is an apocalyptic number.

It is an amenable number.

256266051113 is a deficient number, since it is larger than the sum of its proper divisors (33215707).

256266051113 is an equidigital number, since it uses as much as digits as its factorization.

256266051113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33215706.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 256266051113 in words is "two hundred fifty-six billion, two hundred sixty-six million, fifty-one thousand, one hundred thirteen".