12638888764 has 6 divisors (see below), whose sum is σ = 22118055344. Its totient is φ = 6319444380.

The previous prime is 12638888761. The next prime is 12638888771. The reversal of 12638888764 is 46788883621.

12638888764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638888761) 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, 1579861092 + ... + 1579861099.

Almost surely, 2^12638888764 is an apocalyptic number.

It is an amenable number.

12638888764 is a deficient number, since it is larger than the sum of its proper divisors (9479166580).

12638888764 is a wasteful number, since it uses less digits than its factorization.

12638888764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159722195 (or 3159722193 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 61.

The spelling of 12638888764 in words is "twelve billion, six hundred thirty-eight million, eight hundred eighty-eight thousand, seven hundred sixty-four".