256262544313 has 2 divisors, whose sum is σ = 256262544314. Its totient is φ = 256262544312.

The previous prime is 256262544283. The next prime is 256262544371. The reversal of 256262544313 is 313445262652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198312574329 + 57949969984 = 445323^2 + 240728^2 .

It is a cyclic number.

It is not a de Polignac number, because 256262544313 - 2⁵ = 256262544281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256262544313.

It is not a weakly prime, because it can be changed into another prime (256262544383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128131272156 + 128131272157.

It is an arithmetic number, because the mean of its divisors is an integer number (128131272157).

Almost surely, 2^256262544313 is an apocalyptic number.

It is an amenable number.

256262544313 is a deficient number, since it is larger than the sum of its proper divisors (1).

256262544313 is an equidigital number, since it uses as much as digits as its factorization.

256262544313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 43.

The spelling of 256262544313 in words is "two hundred fifty-six billion, two hundred sixty-two million, five hundred forty-four thousand, three hundred thirteen".