12646581518593 has 24 divisors (see below), whose sum is σ = 13934481811488. Its totient is φ = 11469057600000.

The previous prime is 12646581518531. The next prime is 12646581518651. The reversal of 12646581518593 is 39581518564621.

It is a de Polignac number, because none of the positive numbers 2^k-12646581518593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12646582518593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86784993 + ... + 86930593.

It is an arithmetic number, because the mean of its divisors is an integer number (580603408812).

Almost surely, 2^{12646581518593} is an apocalyptic number.

It is an amenable number.

12646581518593 is a deficient number, since it is larger than the sum of its proper divisors (1287900292895).

12646581518593 is a wasteful number, since it uses less digits than its factorization.

12646581518593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147357 (or 147346 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 64.

The spelling of 12646581518593 in words is "twelve trillion, six hundred forty-six billion, five hundred eighty-one million, five hundred eighteen thousand, five hundred ninety-three".