12731368438503 has 128 divisors (see below), whose sum is σ = 22262131584000. Its totient is φ = 7089280289280.

The previous prime is 12731368438487. The next prime is 12731368438609. The reversal of 12731368438503 is 30583486313721.

12731368438503 is a `hidden beast` number, since 1 + 2 + 7 + 31 + 3 + 68 + 43 + 8 + 503 = 666.

12731368438503 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 12731368438503 - 2⁴ = 12731368438487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12731368438503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731368438903) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 744820825 + ... + 744837917.

It is an arithmetic number, because the mean of its divisors is an integer number (173922903000).

Almost surely, 2^{12731368438503} is an apocalyptic number.

12731368438503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12731368438503 is a deficient number, since it is larger than the sum of its proper divisors (9530763145497).

12731368438503 is a wasteful number, since it uses less digits than its factorization.

12731368438503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18014 (or 18008 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 12731368438503 in words is "twelve trillion, seven hundred thirty-one billion, three hundred sixty-eight million, four hundred thirty-eight thousand, five hundred three".