12641324356 has 24 divisors (see below), whose sum is σ = 22879019520. Its totient is φ = 6107866752.

The previous prime is 12641324299. The next prime is 12641324369. The reversal of 12641324356 is 65342314621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410725 + ... + 440428.

It is an arithmetic number, because the mean of its divisors is an integer number (953292480).

Almost surely, 2^12641324356 is an apocalyptic number.

It is an amenable number.

12641324356 is a deficient number, since it is larger than the sum of its proper divisors (10237695164).

12641324356 is a wasteful number, since it uses less digits than its factorization.

12641324356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851283 (or 851281 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

Adding to 12641324356 its reverse (65342314621), we get a palindrome (77983638977).

The spelling of 12641324356 in words is "twelve billion, six hundred forty-one million, three hundred twenty-four thousand, three hundred fifty-six".