12118658828 has 24 divisors (see below), whose sum is σ = 22534544592. Its totient is φ = 5682737664.

The previous prime is 12118658809. The next prime is 12118658857. The reversal of 12118658828 is 82885681121.

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, 295625 + ... + 334112.

It is an arithmetic number, because the mean of its divisors is an integer number (938939358).

Almost surely, 2^12118658828 is an apocalyptic number.

It is an amenable number.

12118658828 is a deficient number, since it is larger than the sum of its proper divisors (10415885764).

12118658828 is a wasteful number, since it uses less digits than its factorization.

12118658828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630041 (or 630039 counting only the distinct ones).

The product of its digits is 491520, while the sum is 50.

The spelling of 12118658828 in words is "twelve billion, one hundred eighteen million, six hundred fifty-eight thousand, eight hundred twenty-eight".