12647786133841 has 4 divisors (see below), whose sum is σ = 12825923966784. Its totient is φ = 12469648300900.

The previous prime is 12647786133797. The next prime is 12647786133859. The reversal of 12647786133841 is 14833168774621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12647786133841 - 2²¹ = 12647784036689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12647786133841.

It is not an unprimeable number, because it can be changed into a prime (12647786133881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89068916365 + ... + 89068916506.

It is an arithmetic number, because the mean of its divisors is an integer number (3206480991696).

Almost surely, 2^{12647786133841} is an apocalyptic number.

It is an amenable number.

12647786133841 is a deficient number, since it is larger than the sum of its proper divisors (178137832943).

12647786133841 is an equidigital number, since it uses as much as digits as its factorization.

12647786133841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178137832942.

The product of its digits is 32514048, while the sum is 61.

The spelling of 12647786133841 in words is "twelve trillion, six hundred forty-seven billion, seven hundred eighty-six million, one hundred thirty-three thousand, eight hundred forty-one".