2566121479 has 2 divisors, whose sum is σ = 2566121480. Its totient is φ = 2566121478.

The previous prime is 2566121473. The next prime is 2566121497. The reversal of 2566121479 is 9741216652.

2566121479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (2566121497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2566121479 - 2⁹ = 2566120967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2566121473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283060739 + 1283060740.

It is an arithmetic number, because the mean of its divisors is an integer number (1283060740).

Almost surely, 2^2566121479 is an apocalyptic number.

2566121479 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566121479 is an equidigital number, since it uses as much as digits as its factorization.

2566121479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 2566121479 is about 50656.8996189068. The cubic root of 2566121479 is about 1369.0702625022.

The spelling of 2566121479 in words is "two billion, five hundred sixty-six million, one hundred twenty-one thousand, four hundred seventy-nine".