12453032520 has 96 divisors (see below), whose sum is σ = 40540401720. Its totient is φ = 3315225600.

The previous prime is 12453032509. The next prime is 12453032521. The reversal of 12453032520 is 2523035421.

It is a happy number.

12453032520 is a `hidden beast` number, since 124 + 530 + 3 + 2 + 5 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9835482276 + 2617550244 = 99174^2 + 51162^2 .

It is not an unprimeable number, because it can be changed into a prime (12453032521) 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 23 ways as a sum of consecutive naturals, for example, 187582 + ... + 245138.

Almost surely, 2^12453032520 is an apocalyptic number.

12453032520 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 12453032520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20270200860).

12453032520 is an abundant number, since it is smaller than the sum of its proper divisors (28087369200).

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

12453032520 is a wasteful number, since it uses less digits than its factorization.

12453032520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58175 (or 58168 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 12453032520 its reverse (2523035421), we get a palindrome (14976067941).

The spelling of 12453032520 in words is "twelve billion, four hundred fifty-three million, thirty-two thousand, five hundred twenty".