12638900003 has 2 divisors, whose sum is σ = 12638900004. Its totient is φ = 12638900002.

The previous prime is 12638899991. The next prime is 12638900081. The reversal of 12638900003 is 30000983621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12638900003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12638900093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6319450001 + 6319450002.

It is an arithmetic number, because the mean of its divisors is an integer number (6319450002).

Almost surely, 2^12638900003 is an apocalyptic number.

12638900003 is a deficient number, since it is larger than the sum of its proper divisors (1).

12638900003 is an equidigital number, since it uses as much as digits as its factorization.

12638900003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 12638900003 in words is "twelve billion, six hundred thirty-eight million, nine hundred thousand, three".