2562645791 has 2 divisors, whose sum is σ = 2562645792. Its totient is φ = 2562645790.

The previous prime is 2562645779. The next prime is 2562645823. The reversal of 2562645791 is 1975462652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2562645791 - 2⁶ = 2562645727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2562645191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281322895 + 1281322896.

It is an arithmetic number, because the mean of its divisors is an integer number (1281322896).

Almost surely, 2^2562645791 is an apocalyptic number.

2562645791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2562645791 is an equidigital number, since it uses as much as digits as its factorization.

2562645791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The square root of 2562645791 is about 50622.5818286661. The cubic root of 2562645791 is about 1368.4518699711.

It can be divided in two parts, 25626 and 45791, that added together give a palindrome (71417).

The spelling of 2562645791 in words is "two billion, five hundred sixty-two million, six hundred forty-five thousand, seven hundred ninety-one".