12184781661472 has 96 divisors (see below), whose sum is σ = 27541289986560. Its totient is φ = 5198155791360.

The previous prime is 12184781661427. The next prime is 12184781661523. The reversal of 12184781661472 is 27416618748121.

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, 140274438 + ... + 140361274.

It is an arithmetic number, because the mean of its divisors is an integer number (286888437360).

Almost surely, 2^{12184781661472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12184781661472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13770644993280).

12184781661472 is an abundant number, since it is smaller than the sum of its proper divisors (15356508325088).

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

12184781661472 is a wasteful number, since it uses less digits than its factorization.

12184781661472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89714 (or 89706 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 58.

The spelling of 12184781661472 in words is "twelve trillion, one hundred eighty-four billion, seven hundred eighty-one million, six hundred sixty-one thousand, four hundred seventy-two".