2656741811 has 2 divisors, whose sum is σ = 2656741812. Its totient is φ = 2656741810.

The previous prime is 2656741783. The next prime is 2656741817. The reversal of 2656741811 is 1181476562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656741811 is a prime.

It is not a weakly prime, because it can be changed into another prime (2656741817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328370905 + 1328370906.

It is an arithmetic number, because the mean of its divisors is an integer number (1328370906).

Almost surely, 2^2656741811 is an apocalyptic number.

2656741811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656741811 is an equidigital number, since it uses as much as digits as its factorization.

2656741811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 2656741811 is about 51543.5913669197. The cubic root of 2656741811 is about 1385.0000323215. Note that the first 4 decimals are identical.

The spelling of 2656741811 in words is "two billion, six hundred fifty-six million, seven hundred forty-one thousand, eight hundred eleven".