12524011520 has 270 divisors, whose sum is σ = 33377318142. Its totient is φ = 4509925376.

The previous prime is 12524011453. The next prime is 12524011523. The reversal of 12524011520 is 2511042521.

It can be written as a sum of positive squares in 3 ways, for example, as 4194893824 + 8329117696 = 64768^2 + 91264^2 .

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12524011523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 544522229 + ... + 544522251.

Almost surely, 2^12524011520 is an apocalyptic number.

12524011520 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 12524011520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16688659071).

12524011520 is an abundant number, since it is smaller than the sum of its proper divisors (20853306622).

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

12524011520 is an frugal number, since it uses more digits than its factorization.

12524011520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 12524011520 in words is "twelve billion, five hundred twenty-four million, eleven thousand, five hundred twenty".