11887742044 has 6 divisors (see below), whose sum is σ = 20803548584. Its totient is φ = 5943871020.

The previous prime is 11887742039. The next prime is 11887742047. The reversal of 11887742044 is 44024778811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11887741985 and 11887742003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887742047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1485967752 + ... + 1485967759.

Almost surely, 2^11887742044 is an apocalyptic number.

It is an amenable number.

11887742044 is a deficient number, since it is larger than the sum of its proper divisors (8915806540).

11887742044 is a wasteful number, since it uses less digits than its factorization.

11887742044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971935515 (or 2971935513 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 46.

The spelling of 11887742044 in words is "eleven billion, eight hundred eighty-seven million, seven hundred forty-two thousand, forty-four".