12180617406 has 32 divisors (see below), whose sum is σ = 27209779200. Its totient is φ = 4038944760.

The previous prime is 12180617377. The next prime is 12180617411. The reversal of 12180617406 is 60471608121.

It is a happy number.

12180617406 is a `hidden beast` number, since 12 + 180 + 61 + 7 + 406 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580176 + ... + 600803.

It is an arithmetic number, because the mean of its divisors is an integer number (850305600).

Almost surely, 2^12180617406 is an apocalyptic number.

12180617406 is an abundant number, since it is smaller than the sum of its proper divisors (15029161794).

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

12180617406 is a wasteful number, since it uses less digits than its factorization.

12180617406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181181 (or 1181175 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 12180617406 in words is "twelve billion, one hundred eighty million, six hundred seventeen thousand, four hundred six".