12776161228 has 12 divisors (see below), whose sum is σ = 22379603400. Its totient is φ = 6381988832.

The previous prime is 12776161219. The next prime is 12776161259. The reversal of 12776161228 is 82216167721.

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, 1518226 + ... + 1526617.

It is an arithmetic number, because the mean of its divisors is an integer number (1864966950).

Almost surely, 2^12776161228 is an apocalyptic number.

It is an amenable number.

12776161228 is a deficient number, since it is larger than the sum of its proper divisors (9603442172).

12776161228 is a wasteful number, since it uses less digits than its factorization.

12776161228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045896 (or 3045894 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The spelling of 12776161228 in words is "twelve billion, seven hundred seventy-six million, one hundred sixty-one thousand, two hundred twenty-eight".