12638528176 has 10 divisors (see below), whose sum is σ = 24487148372. Its totient is φ = 6319264080.

The previous prime is 12638528159. The next prime is 12638528219. The reversal of 12638528176 is 67182583621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394953990 + ... + 394954021.

Almost surely, 2^12638528176 is an apocalyptic number.

12638528176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12638528176 is a deficient number, since it is larger than the sum of its proper divisors (11848620196).

12638528176 is an equidigital number, since it uses as much as digits as its factorization.

12638528176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789908019 (or 789908013 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 12638528176 in words is "twelve billion, six hundred thirty-eight million, five hundred twenty-eight thousand, one hundred seventy-six".