12647763776 has 28 divisors (see below), whose sum is σ = 25102401408. Its totient is φ = 6322749312.

The previous prime is 12647763637. The next prime is 12647763797. The reversal of 12647763776 is 67736774621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430385 + ... + 458831.

It is an arithmetic number, because the mean of its divisors is an integer number (896514336).

Almost surely, 2^12647763776 is an apocalyptic number.

12647763776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12647763776 is a deficient number, since it is larger than the sum of its proper divisors (12454637632).

12647763776 is an equidigital number, since it uses as much as digits as its factorization.

12647763776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35406 (or 35396 counting only the distinct ones).

The product of its digits is 12446784, while the sum is 56.

The spelling of 12647763776 in words is "twelve billion, six hundred forty-seven million, seven hundred sixty-three thousand, seven hundred seventy-six".