12128823788 has 12 divisors (see below), whose sum is σ = 21226224600. Its totient is φ = 6064188192.

The previous prime is 12128823731. The next prime is 12128823799. The reversal of 12128823788 is 88732882121.

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, 151763 + ... + 217461.

It is an arithmetic number, because the mean of its divisors is an integer number (1768852050).

Almost surely, 2^12128823788 is an apocalyptic number.

It is an amenable number.

12128823788 is a deficient number, since it is larger than the sum of its proper divisors (9097400812).

12128823788 is a wasteful number, since it uses less digits than its factorization.

12128823788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111856 (or 111854 counting only the distinct ones).

The product of its digits is 688128, while the sum is 50.

The spelling of 12128823788 in words is "twelve billion, one hundred twenty-eight million, eight hundred twenty-three thousand, seven hundred eighty-eight".