12403207516 has 72 divisors (see below), whose sum is σ = 26386093440. Its totient is φ = 5077039968.

The previous prime is 12403207511. The next prime is 12403207517. The reversal of 12403207516 is 61570230421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403207511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3870771 + ... + 3873973.

It is an arithmetic number, because the mean of its divisors is an integer number (366473520).

Almost surely, 2^12403207516 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 12403207516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13193046720).

12403207516 is an abundant number, since it is smaller than the sum of its proper divisors (13982885924).

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

12403207516 is a wasteful number, since it uses less digits than its factorization.

12403207516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103 (or 4094 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 12403207516 its reverse (61570230421), we get a palindrome (73973437937).

The spelling of 12403207516 in words is "twelve billion, four hundred three million, two hundred seven thousand, five hundred sixteen".