11540423344 has 20 divisors (see below), whose sum is σ = 23674839624. Its totient is φ = 5430787328.

The previous prime is 11540423339. The next prime is 11540423369. The reversal of 11540423344 is 44332404511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21213742 + ... + 21214285.

Almost surely, 2^11540423344 is an apocalyptic number.

It is an amenable number.

11540423344 is an abundant number, since it is smaller than the sum of its proper divisors (12134416280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11540423344 is a wasteful number, since it uses less digits than its factorization.

11540423344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42428052 (or 42428046 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 11540423344 its reverse (44332404511), we get a palindrome (55872827855).

The spelling of 11540423344 in words is "eleven billion, five hundred forty million, four hundred twenty-three thousand, three hundred forty-four".