12179546738 has 18 divisors (see below), whose sum is σ = 18540356679. Its totient is φ = 6000733152.

The previous prime is 12179546719. The next prime is 12179546747. The reversal of 12179546738 is 83764597121.

It can be written as a sum of positive squares in 5 ways, for example, as 6521047009 + 5658499729 = 80753^2 + 75223^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78037.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12179546738.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11392868 + ... + 11393936.

Almost surely, 2^12179546738 is an apocalyptic number.

12179546738 is a deficient number, since it is larger than the sum of its proper divisors (6360809941).

12179546738 is an frugal number, since it uses more digits than its factorization.

12179546738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286 (or 1144 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 53.

The spelling of 12179546738 in words is "twelve billion, one hundred seventy-nine million, five hundred forty-six thousand, seven hundred thirty-eight".