2564411851 has 2 divisors, whose sum is σ = 2564411852. Its totient is φ = 2564411850.

The previous prime is 2564411827. The next prime is 2564411891. The reversal of 2564411851 is 1581144652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564411851 - 2⁷ = 2564411723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2564411851.

It is not a weakly prime, because it can be changed into another prime (2564411821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282205925 + 1282205926.

It is an arithmetic number, because the mean of its divisors is an integer number (1282205926).

Almost surely, 2^2564411851 is an apocalyptic number.

2564411851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564411851 is an equidigital number, since it uses as much as digits as its factorization.

2564411851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 37.

The square root of 2564411851 is about 50640.0222255086. The cubic root of 2564411851 is about 1368.7661562392.

The spelling of 2564411851 in words is "two billion, five hundred sixty-four million, four hundred eleven thousand, eight hundred fifty-one".