12447267949172 has 12 divisors (see below), whose sum is σ = 24894535898400. Its totient is φ = 5334543406776.

The previous prime is 12447267949169. The next prime is 12447267949201. The reversal of 12447267949172 is 27194976274421.

12447267949172 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12447267949099 and 12447267949108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222272641922 + ... + 222272641977.

It is an arithmetic number, because the mean of its divisors is an integer number (2074544658200).

Almost surely, 2^{12447267949172} is an apocalyptic number.

It is an amenable number.

12447267949172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12447267949172 is a wasteful number, since it uses less digits than its factorization.

12447267949172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444545283910 (or 444545283908 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 65.

The spelling of 12447267949172 in words is "twelve trillion, four hundred forty-seven billion, two hundred sixty-seven million, nine hundred forty-nine thousand, one hundred seventy-two".