12638481203 has 16 divisors (see below), whose sum is σ = 12862938816. Its totient is φ = 12416353920.

The previous prime is 12638481179. The next prime is 12638481217. The reversal of 12638481203 is 30218483621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12638481203 - 2¹² = 12638477107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12638481263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14410601 + ... + 14411477.

It is an arithmetic number, because the mean of its divisors is an integer number (803933676).

Almost surely, 2^12638481203 is an apocalyptic number.

12638481203 is a deficient number, since it is larger than the sum of its proper divisors (224457613).

12638481203 is a wasteful number, since it uses less digits than its factorization.

12638481203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934.

The product of its (nonzero) digits is 55296, while the sum is 38.

Adding to 12638481203 its sum of digits (38), we get a square (12638481241 = 112421²).

The spelling of 12638481203 in words is "twelve billion, six hundred thirty-eight million, four hundred eighty-one thousand, two hundred three".