12647144755 has 48 divisors (see below), whose sum is σ = 17990934624. Its totient is φ = 8508595200.

The previous prime is 12647144707. The next prime is 12647144761. The reversal of 12647144755 is 55744174621.

It is not a de Polignac number, because 12647144755 - 2²³ = 12638756147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2793924 + ... + 2798446.

It is an arithmetic number, because the mean of its divisors is an integer number (374811138).

Almost surely, 2^12647144755 is an apocalyptic number.

12647144755 is a deficient number, since it is larger than the sum of its proper divisors (5343789869).

12647144755 is a wasteful number, since it uses less digits than its factorization.

12647144755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756 (or 4749 counting only the distinct ones).

The product of its digits is 940800, while the sum is 46.

The spelling of 12647144755 in words is "twelve billion, six hundred forty-seven million, one hundred forty-four thousand, seven hundred fifty-five".