2566434379 has 2 divisors, whose sum is σ = 2566434380. Its totient is φ = 2566434378.

The previous prime is 2566434371. The next prime is 2566434391. The reversal of 2566434379 is 9734346652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2566434379 - 2³ = 2566434371 is a prime.

It is not a weakly prime, because it can be changed into another prime (2566434371) 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, 1283217189 + 1283217190.

It is an arithmetic number, because the mean of its divisors is an integer number (1283217190).

Almost surely, 2^2566434379 is an apocalyptic number.

2566434379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566434379 is an equidigital number, since it uses as much as digits as its factorization.

2566434379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 49.

The square root of 2566434379 is about 50659.9879490708. The cubic root of 2566434379 is about 1369.1259060974.

The spelling of 2566434379 in words is "two billion, five hundred sixty-six million, four hundred thirty-four thousand, three hundred seventy-nine".