2647719871 has 2 divisors, whose sum is σ = 2647719872. Its totient is φ = 2647719870.

The previous prime is 2647719799. The next prime is 2647719881. The reversal of 2647719871 is 1789177462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2647719871 - 2⁷ = 2647719743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2647719881) 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, 1323859935 + 1323859936.

It is an arithmetic number, because the mean of its divisors is an integer number (1323859936).

Almost surely, 2^2647719871 is an apocalyptic number.

2647719871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647719871 is an equidigital number, since it uses as much as digits as its factorization.

2647719871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 52.

The square root of 2647719871 is about 51455.9993683924. Note that the first 3 decimals coincide. The cubic root of 2647719871 is about 1383.4304960188.

The spelling of 2647719871 in words is "two billion, six hundred forty-seven million, seven hundred nineteen thousand, eight hundred seventy-one".