12504400216 has 64 divisors (see below), whose sum is σ = 29406343680. Its totient is φ = 4842631680.

The previous prime is 12504400193. The next prime is 12504400229. The reversal of 12504400216 is 61200440521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42096 + ... + 163648.

It is an arithmetic number, because the mean of its divisors is an integer number (459474120).

Almost surely, 2^12504400216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12504400216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14703171840).

12504400216 is an abundant number, since it is smaller than the sum of its proper divisors (16901943464).

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

12504400216 is a wasteful number, since it uses less digits than its factorization.

12504400216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121744 (or 121740 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12504400216 its reverse (61200440521), we get a palindrome (73704840737).

The spelling of 12504400216 in words is "twelve billion, five hundred four million, four hundred thousand, two hundred sixteen".