256583727311 has 4 divisors (see below), whose sum is σ = 256611598800. Its totient is φ = 256555855824.

The previous prime is 256583727251. The next prime is 256583727343. The reversal of 256583727311 is 113727385652.

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 256583727311 - 2¹⁴ = 256583710927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256583727311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256583727391) 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, 13921931 + ... + 13940348.

It is an arithmetic number, because the mean of its divisors is an integer number (64152899700).

Almost surely, 2^256583727311 is an apocalyptic number.

256583727311 is a deficient number, since it is larger than the sum of its proper divisors (27871489).

256583727311 is an equidigital number, since it uses as much as digits as its factorization.

256583727311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27871488.

The product of its digits is 2116800, while the sum is 50.

The spelling of 256583727311 in words is "two hundred fifty-six billion, five hundred eighty-three million, seven hundred twenty-seven thousand, three hundred eleven".