256612226146733 has 2 divisors, whose sum is σ = 256612226146734. Its totient is φ = 256612226146732.

The previous prime is 256612226146711. The next prime is 256612226146751. The reversal of 256612226146733 is 337641622216652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164173942789444 + 92438283357289 = 12813038^2 + 9614483^2 .

It is a cyclic number.

It is not a de Polignac number, because 256612226146733 - 2⁸ = 256612226146477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256612226146763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128306113073366 + 128306113073367.

It is an arithmetic number, because the mean of its divisors is an integer number (128306113073367).

Almost surely, 2^{256612226146733} is an apocalyptic number.

It is an amenable number.

256612226146733 is a deficient number, since it is larger than the sum of its proper divisors (1).

256612226146733 is an equidigital number, since it uses as much as digits as its factorization.

256612226146733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 56.

The spelling of 256612226146733 in words is "two hundred fifty-six trillion, six hundred twelve billion, two hundred twenty-six million, one hundred forty-six thousand, seven hundred thirty-three".