2566420841 has 2 divisors, whose sum is σ = 2566420842. Its totient is φ = 2566420840.

The previous prime is 2566420811. The next prime is 2566420867. The reversal of 2566420841 is 1480246652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2502100441 + 64320400 = 50021^2 + 8020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2566420841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2566420795 and 2566420804.

It is not a weakly prime, because it can be changed into another prime (2566420811) 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, 1283210420 + 1283210421.

It is an arithmetic number, because the mean of its divisors is an integer number (1283210421).

Almost surely, 2^2566420841 is an apocalyptic number.

It is an amenable number.

2566420841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566420841 is an equidigital number, since it uses as much as digits as its factorization.

2566420841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2566420841 is about 50659.8543325975. The cubic root of 2566420841 is about 1369.1234987031.

The spelling of 2566420841 in words is "two billion, five hundred sixty-six million, four hundred twenty thousand, eight hundred forty-one".