11724388664 has 8 divisors (see below), whose sum is σ = 21983228760. Its totient is φ = 5862194328.

The previous prime is 11724388651. The next prime is 11724388679. The reversal of 11724388664 is 46688342711.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11724388664² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732774284 + ... + 732774299.

It is an arithmetic number, because the mean of its divisors is an integer number (2747903595).

Almost surely, 2^11724388664 is an apocalyptic number.

It is an amenable number.

11724388664 is a deficient number, since it is larger than the sum of its proper divisors (10258840096).

11724388664 is a wasteful number, since it uses less digits than its factorization.

11724388664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465548589 (or 1465548585 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The spelling of 11724388664 in words is "eleven billion, seven hundred twenty-four million, three hundred eighty-eight thousand, six hundred sixty-four".