12450400503 has 16 divisors (see below), whose sum is σ = 18233998080. Its totient is φ = 7521522624.

The previous prime is 12450400453. The next prime is 12450400511. The reversal of 12450400503 is 30500405421.

12450400503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12450400503 - 2⁹ = 12450399991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12450400103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4747126 + ... + 4749747.

It is an arithmetic number, because the mean of its divisors is an integer number (1139624880).

Almost surely, 2^12450400503 is an apocalyptic number.

12450400503 is a deficient number, since it is larger than the sum of its proper divisors (5783597577).

12450400503 is a wasteful number, since it uses less digits than its factorization.

12450400503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9496918.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 12450400503 its reverse (30500405421), we get a palindrome (42950805924).

The spelling of 12450400503 in words is "twelve billion, four hundred fifty million, four hundred thousand, five hundred three".