2566426569671 has 2 divisors, whose sum is σ = 2566426569672. Its totient is φ = 2566426569670.

The previous prime is 2566426569653. The next prime is 2566426569743. The reversal of 2566426569671 is 1769656246652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2566426569671 - 2¹⁴ = 2566426553287 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2566426569598 and 2566426569607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2566426569271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283213284835 + 1283213284836.

It is an arithmetic number, because the mean of its divisors is an integer number (1283213284836).

Almost surely, 2^{2566426569671} is an apocalyptic number.

2566426569671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566426569671 is an equidigital number, since it uses as much as digits as its factorization.

2566426569671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 195955200, while the sum is 65.

The spelling of 2566426569671 in words is "two trillion, five hundred sixty-six billion, four hundred twenty-six million, five hundred sixty-nine thousand, six hundred seventy-one".