2771271856 has 20 divisors (see below), whose sum is σ = 5421471952. Its totient is φ = 1372182336.

The previous prime is 2771271851. The next prime is 2771271883. The reversal of 2771271856 is 6581721772.

It is not an unprimeable number, because it can be changed into a prime (2771271851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839151 + ... + 842446.

Almost surely, 2^2771271856 is an apocalyptic number.

It is an amenable number.

2771271856 is a deficient number, since it is larger than the sum of its proper divisors (2650200096).

2771271856 is a wasteful number, since it uses less digits than its factorization.

2771271856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681708 (or 1681702 counting only the distinct ones).

The product of its digits is 329280, while the sum is 46.

The square root of 2771271856 is about 52642.8708943576. The cubic root of 2771271856 is about 1404.6227895308.

The spelling of 2771271856 in words is "two billion, seven hundred seventy-one million, two hundred seventy-one thousand, eight hundred fifty-six".