11391719824 has 15 divisors (see below), whose sum is σ = 22072284363. Its totient is φ = 5695646448.

The previous prime is 11391719741. The next prime is 11391719881. The reversal of 11391719824 is 42891719311.

The square root of 11391719824 is 106732.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 413587 + ... + 440269.

Almost surely, 2^11391719824 is an apocalyptic number.

11391719824 is the 106732-nd square number.

It is an amenable number.

11391719824 is a deficient number, since it is larger than the sum of its proper divisors (10680564539).

11391719824 is an frugal number, since it uses more digits than its factorization.

11391719824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53374 (or 26685 counting only the distinct ones).

The product of its digits is 108864, while the sum is 46.

The spelling of 11391719824 in words is "eleven billion, three hundred ninety-one million, seven hundred nineteen thousand, eight hundred twenty-four".