2771206520 has 32 divisors (see below), whose sum is σ = 6506313120. Its totient is φ = 1060287360.

The previous prime is 2771206513. The next prime is 2771206553. The reversal of 2771206520 is 256021772.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1505171 + ... + 1507010.

It is an arithmetic number, because the mean of its divisors is an integer number (203322285).

Almost surely, 2^2771206520 is an apocalyptic number.

2771206520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2771206520 is an abundant number, since it is smaller than the sum of its proper divisors (3735106600).

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

2771206520 is a wasteful number, since it uses less digits than its factorization.

2771206520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012215 (or 3012211 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2771206520 is about 52642.2503318390. The cubic root of 2771206520 is about 1404.6117508982.

The spelling of 2771206520 in words is "two billion, seven hundred seventy-one million, two hundred six thousand, five hundred twenty".