11540144440 has 32 divisors (see below), whose sum is σ = 28325810160. Its totient is φ = 4196416000.

The previous prime is 11540144431. The next prime is 11540144443. The reversal of 11540144440 is 4444104511.

11540144440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11540144399 and 11540144408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540144443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13113361 + ... + 13114240.

Almost surely, 2^11540144440 is an apocalyptic number.

11540144440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11540144440 is an abundant number, since it is smaller than the sum of its proper divisors (16785665720).

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

11540144440 is a wasteful number, since it uses less digits than its factorization.

11540144440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26227623 (or 26227619 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 11540144440 its reverse (4444104511), we get a palindrome (15984248951).

The spelling of 11540144440 in words is "eleven billion, five hundred forty million, one hundred forty-four thousand, four hundred forty".