4256758576523 has 2 divisors, whose sum is σ = 4256758576524. Its totient is φ = 4256758576522.

The previous prime is 4256758576489. The next prime is 4256758576571. The reversal of 4256758576523 is 3256758576524.

It is a happy number.

4256758576523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4256758576523 - 2⁸ = 4256758576267 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4256758576523.

It is not a weakly prime, because it can be changed into another prime (4256758576723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128379288261 + 2128379288262.

It is an arithmetic number, because the mean of its divisors is an integer number (2128379288262).

Almost surely, 2^{4256758576523} is an apocalyptic number.

4256758576523 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256758576523 is an equidigital number, since it uses as much as digits as its factorization.

4256758576523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360000, while the sum is 65.

Subtracting from 4256758576523 its reverse (3256758576524), we obtain a palindrome (999999999999).

The spelling of 4256758576523 in words is "four trillion, two hundred fifty-six billion, seven hundred fifty-eight million, five hundred seventy-six thousand, five hundred twenty-three".