12638628523 has 2 divisors, whose sum is σ = 12638628524. Its totient is φ = 12638628522.

The previous prime is 12638628503. The next prime is 12638628581. The reversal of 12638628523 is 32582683621.

12638628523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12638628523 - 2²¹ = 12636531371 is a prime.

It is not a weakly prime, because it can be changed into another prime (12638628503) 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 as a sum of consecutive naturals, namely, 6319314261 + 6319314262.

It is an arithmetic number, because the mean of its divisors is an integer number (6319314262).

Almost surely, 2^12638628523 is an apocalyptic number.

12638628523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12638628523 is an equidigital number, since it uses as much as digits as its factorization.

12638628523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 46.

The spelling of 12638628523 in words is "twelve billion, six hundred thirty-eight million, six hundred twenty-eight thousand, five hundred twenty-three".