12638003637 has 32 divisors (see below), whose sum is σ = 20120260608. Its totient is φ = 6899118336.

The previous prime is 12638003633. The next prime is 12638003659. The reversal of 12638003637 is 73630083621.

It is not a de Polignac number, because 12638003637 - 2² = 12638003633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12638003595 and 12638003604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638003633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381613 + ... + 413405.

It is an arithmetic number, because the mean of its divisors is an integer number (628758144).

Almost surely, 2^12638003637 is an apocalyptic number.

It is an amenable number.

12638003637 is a deficient number, since it is larger than the sum of its proper divisors (7482256971).

12638003637 is a wasteful number, since it uses less digits than its factorization.

12638003637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32649.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 12638003637 in words is "twelve billion, six hundred thirty-eight million, three thousand, six hundred thirty-seven".