12638784608 has 12 divisors (see below), whose sum is σ = 24882607260. Its totient is φ = 6319392288.

The previous prime is 12638784569. The next prime is 12638784637. The reversal of 12638784608 is 80648783621.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12638784608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197480978 + ... + 197481041.

It is an arithmetic number, because the mean of its divisors is an integer number (2073550605).

Almost surely, 2^12638784608 is an apocalyptic number.

It is an amenable number.

12638784608 is a deficient number, since it is larger than the sum of its proper divisors (12243822652).

12638784608 is an equidigital number, since it uses as much as digits as its factorization.

12638784608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394962029 (or 394962021 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 12638784608 in words is "twelve billion, six hundred thirty-eight million, seven hundred eighty-four thousand, six hundred eight".