12638003633 has 2 divisors, whose sum is σ = 12638003634. Its totient is φ = 12638003632.

The previous prime is 12638003629. The next prime is 12638003659. The reversal of 12638003633 is 33630083621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7117959424 + 5520044209 = 84368^2 + 74297^2 .

It is a cyclic number.

It is not a de Polignac number, because 12638003633 - 2² = 12638003629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12638003593 and 12638003602.

It is not a weakly prime, because it can be changed into another prime (12638003603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6319001816 + 6319001817.

It is an arithmetic number, because the mean of its divisors is an integer number (6319001817).

Almost surely, 2^12638003633 is an apocalyptic number.

It is an amenable number.

12638003633 is a deficient number, since it is larger than the sum of its proper divisors (1).

12638003633 is an equidigital number, since it uses as much as digits as its factorization.

12638003633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 12638003633 in words is "twelve billion, six hundred thirty-eight million, three thousand, six hundred thirty-three".