12015243332144 has 80 divisors (see below), whose sum is σ = 25985823134208. Its totient is φ = 5346499758336.

The previous prime is 12015243332143. The next prime is 12015243332153. The reversal of 12015243332144 is 44123334251021.

It is not an unprimeable number, because it can be changed into a prime (12015243332143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8517062 + ... + 9827045.

Almost surely, 2^{12015243332144} is an apocalyptic number.

It is an amenable number.

12015243332144 is an abundant number, since it is smaller than the sum of its proper divisors (13970579802064).

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

12015243332144 is a wasteful number, since it uses less digits than its factorization.

12015243332144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18344242 (or 18344236 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 12015243332144 its reverse (44123334251021), we get a palindrome (56138577583165).

The spelling of 12015243332144 in words is "twelve trillion, fifteen billion, two hundred forty-three million, three hundred thirty-two thousand, one hundred forty-four".