4256996591 has 2 divisors, whose sum is σ = 4256996592. Its totient is φ = 4256996590.

The previous prime is 4256996563. The next prime is 4256996617. The reversal of 4256996591 is 1956996524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4256996591 - 2¹⁴ = 4256980207 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4256996501) 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, 2128498295 + 2128498296.

It is an arithmetic number, because the mean of its divisors is an integer number (2128498296).

Almost surely, 2^4256996591 is an apocalyptic number.

4256996591 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256996591 is an equidigital number, since it uses as much as digits as its factorization.

4256996591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 56.

The square root of 4256996591 is about 65245.6633884582. The cubic root of 4256996591 is about 1620.6942854225.

The spelling of 4256996591 in words is "four billion, two hundred fifty-six million, nine hundred ninety-six thousand, five hundred ninety-one".