12661082503 has 16 divisors (see below), whose sum is σ = 13774747680. Its totient is φ = 11588714496.

The previous prime is 12661082471. The next prime is 12661082509. The reversal of 12661082503 is 30528016621.

12661082503 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 12661082503 - 2⁵ = 12661082471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661082509) 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, 1935943 + ... + 1942471.

It is an arithmetic number, because the mean of its divisors is an integer number (860921730).

Almost surely, 2^12661082503 is an apocalyptic number.

12661082503 is a deficient number, since it is larger than the sum of its proper divisors (1113665177).

12661082503 is a wasteful number, since it uses less digits than its factorization.

12661082503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9666.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 12661082503 in words is "twelve billion, six hundred sixty-one million, eighty-two thousand, five hundred three".