2771315720 has 16 divisors (see below), whose sum is σ = 6235460460. Its totient is φ = 1108526272.

The previous prime is 2771315671. The next prime is 2771315759. The reversal of 2771315720 is 275131772.

It can be written as a sum of positive squares in 2 ways, for example, as 2712118084 + 59197636 = 52078^2 + 7694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34641407 + ... + 34641486.

Almost surely, 2^2771315720 is an apocalyptic number.

2771315720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2771315720 is an abundant number, since it is smaller than the sum of its proper divisors (3464144740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2771315720 is a wasteful number, since it uses less digits than its factorization.

2771315720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69282904 (or 69282900 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 2771315720 is about 52643.2875113247. The cubic root of 2771315720 is about 1404.6302003338.

The spelling of 2771315720 in words is "two billion, seven hundred seventy-one million, three hundred fifteen thousand, seven hundred twenty".