12666404104 has 8 divisors (see below), whose sum is σ = 23749507710. Its totient is φ = 6333202048.

The previous prime is 12666404071. The next prime is 12666404119. The reversal of 12666404104 is 40140466621.

It can be written as a sum of positive squares in only one way, i.e., 12100440004 + 565964100 = 110002^2 + 23790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12666404104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 791650249 + ... + 791650264.

Almost surely, 2^12666404104 is an apocalyptic number.

It is an amenable number.

12666404104 is a deficient number, since it is larger than the sum of its proper divisors (11083103606).

12666404104 is a wasteful number, since it uses less digits than its factorization.

12666404104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583300519 (or 1583300515 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 12666404104 in words is "twelve billion, six hundred sixty-six million, four hundred four thousand, one hundred four".