11951299684 has 27 divisors (see below), whose sum is σ = 21387627667. Its totient is φ = 5843479544.

The previous prime is 11951299667. The next prime is 11951299699. The reversal of 11951299684 is 48699215911.

It is a happy number.

The square root of 11951299684 is 109322.

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 8 ways as a sum of consecutive naturals, for example, 10275687 + ... + 10276849.

Almost surely, 2^11951299684 is an apocalyptic number.

11951299684 is the 109322-nd square number.

It is an amenable number.

11951299684 is a deficient number, since it is larger than the sum of its proper divisors (9436327983).

11951299684 is an frugal number, since it uses more digits than its factorization.

11951299684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 1212 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 55.

The spelling of 11951299684 in words is "eleven billion, nine hundred fifty-one million, two hundred ninety-nine thousand, six hundred eighty-four".