2656478843 has 2 divisors, whose sum is σ = 2656478844. Its totient is φ = 2656478842.

The previous prime is 2656478821. The next prime is 2656478857. The reversal of 2656478843 is 3488746562.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2656478843 - 2¹⁸ = 2656216699 is a prime.

It is not a weakly prime, because it can be changed into another prime (2656478893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328239421 + 1328239422.

It is an arithmetic number, because the mean of its divisors is an integer number (1328239422).

Almost surely, 2^2656478843 is an apocalyptic number.

2656478843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656478843 is an equidigital number, since it uses as much as digits as its factorization.

2656478843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 53.

The square root of 2656478843 is about 51541.0403756075. The cubic root of 2656478843 is about 1384.9543344039.

The spelling of 2656478843 in words is "two billion, six hundred fifty-six million, four hundred seventy-eight thousand, eight hundred forty-three".