12128308908 has 24 divisors (see below), whose sum is σ = 28372147440. Its totient is φ = 4032375360.

The previous prime is 12128308897. The next prime is 12128308991. The reversal of 12128308908 is 80980382121.

It is a self number, because there is not a number n which added to its sum of digits gives 12128308908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294423 + ... + 1303758.

It is an arithmetic number, because the mean of its divisors is an integer number (1182172810).

Almost surely, 2^12128308908 is an apocalyptic number.

It is an amenable number.

12128308908 is an abundant number, since it is smaller than the sum of its proper divisors (16243838532).

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

12128308908 is a wasteful number, since it uses less digits than its factorization.

12128308908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598577 (or 2598575 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 12128308908 in words is "twelve billion, one hundred twenty-eight million, three hundred eight thousand, nine hundred eight".