12015133013520 has 1920 divisors, whose sum is σ = 52831946539008. Its totient is φ = 2379032985600.

The previous prime is 12015133013473. The next prime is 12015133013579. The reversal of 12015133013520 is 2531033151021.

12015133013520 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 5 + 1 + 3 + 301 + 352 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 18570529837 + ... + 18570530483.

Almost surely, 2^{12015133013520} is an apocalyptic number.

12015133013520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12015133013520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26415973269504).

12015133013520 is an abundant number, since it is smaller than the sum of its proper divisors (40816813525488).

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

12015133013520 is a wasteful number, since it uses less digits than its factorization.

12015133013520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 12015133013520 its reverse (2531033151021), we get a palindrome (14546166164541).

The spelling of 12015133013520 in words is "twelve trillion, fifteen billion, one hundred thirty-three million, thirteen thousand, five hundred twenty".