2558397811 has 2 divisors, whose sum is σ = 2558397812. Its totient is φ = 2558397810.

The previous prime is 2558397799. The next prime is 2558397979. The reversal of 2558397811 is 1187938552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2558397811 - 2⁷ = 2558397683 is a prime.

It is not a weakly prime, because it can be changed into another prime (2558397311) 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, 1279198905 + 1279198906.

It is an arithmetic number, because the mean of its divisors is an integer number (1279198906).

Almost surely, 2^2558397811 is an apocalyptic number.

2558397811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2558397811 is an equidigital number, since it uses as much as digits as its factorization.

2558397811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 49.

The square root of 2558397811 is about 50580.6070643681. The cubic root of 2558397811 is about 1367.6953118827.

The spelling of 2558397811 in words is "two billion, five hundred fifty-eight million, three hundred ninety-seven thousand, eight hundred eleven".