11544213992 has 16 divisors (see below), whose sum is σ = 21654924900. Its totient is φ = 5769567360.

The previous prime is 11544213991. The next prime is 11544214007. The reversal of 11544213992 is 29931244511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10952459716 + 591754276 = 104654^2 + 24326^2 .

It is not an unprimeable number, because it can be changed into a prime (11544213991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298067 + ... + 334562.

Almost surely, 2^11544213992 is an apocalyptic number.

It is an amenable number.

11544213992 is a deficient number, since it is larger than the sum of its proper divisors (10110710908).

11544213992 is a wasteful number, since it uses less digits than its factorization.

11544213992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634916 (or 634912 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The spelling of 11544213992 in words is "eleven billion, five hundred forty-four million, two hundred thirteen thousand, nine hundred ninety-two".