12432004052520 has 128 divisors (see below), whose sum is σ = 40181760662400. Its totient is φ = 3058903747584.

The previous prime is 12432004052509. The next prime is 12432004052539. The reversal of 12432004052520 is 2525040023421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2058939 + ... + 5394741.

It is an arithmetic number, because the mean of its divisors is an integer number (313920005175).

Almost surely, 2^{12432004052520} is an apocalyptic number.

12432004052520 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 12432004052520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20090880331200).

12432004052520 is an abundant number, since it is smaller than the sum of its proper divisors (27749756609880).

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

12432004052520 is a wasteful number, since it uses less digits than its factorization.

12432004052520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338219 (or 3338215 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 12432004052520 its reverse (2525040023421), we get a palindrome (14957044075941).

The spelling of 12432004052520 in words is "twelve trillion, four hundred thirty-two billion, four million, fifty-two thousand, five hundred twenty".