27768576212 has 24 divisors (see below), whose sum is σ = 52376207016. Its totient is φ = 12805705728.

The previous prime is 27768576211. The next prime is 27768576233. The reversal of 27768576212 is 21267586772.

It can be written as a sum of positive squares in 4 ways, for example, as 2894870416 + 24873705796 = 53804^2 + 157714^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27768576211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156113 + ... + 282680.

It is an arithmetic number, because the mean of its divisors is an integer number (2182341959).

Almost surely, 2^27768576212 is an apocalyptic number.

It is an amenable number.

27768576212 is a deficient number, since it is larger than the sum of its proper divisors (24607630804).

27768576212 is a wasteful number, since it uses less digits than its factorization.

27768576212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440027 (or 440025 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 53.

The spelling of 27768576212 in words is "twenty-seven billion, seven hundred sixty-eight million, five hundred seventy-six thousand, two hundred twelve".