11821714564 has 12 divisors (see below), whose sum is σ = 22568727888. Its totient is φ = 5373506600.

The previous prime is 11821714549. The next prime is 11821714591. The reversal of 11821714564 is 46541712811.

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, 134337622 + ... + 134337709.

It is an arithmetic number, because the mean of its divisors is an integer number (1880727324).

Almost surely, 2^11821714564 is an apocalyptic number.

It is an amenable number.

11821714564 is a deficient number, since it is larger than the sum of its proper divisors (10747013324).

11821714564 is a wasteful number, since it uses less digits than its factorization.

11821714564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268675346 (or 268675344 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The spelling of 11821714564 in words is "eleven billion, eight hundred twenty-one million, seven hundred fourteen thousand, five hundred sixty-four".