256583727343 has 2 divisors, whose sum is σ = 256583727344. Its totient is φ = 256583727342.

The previous prime is 256583727251. The next prime is 256583727353. The reversal of 256583727343 is 343727385652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256583727343 - 2¹³ = 256583719151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256583727353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128291863671 + 128291863672.

It is an arithmetic number, because the mean of its divisors is an integer number (128291863672).

Almost surely, 2^256583727343 is an apocalyptic number.

256583727343 is a deficient number, since it is larger than the sum of its proper divisors (1).

256583727343 is an equidigital number, since it uses as much as digits as its factorization.

256583727343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 55.

The spelling of 256583727343 in words is "two hundred fifty-six billion, five hundred eighty-three million, seven hundred twenty-seven thousand, three hundred forty-three".