11520012044 has 24 divisors (see below), whose sum is σ = 20284380480. Its totient is φ = 5724585216.

The previous prime is 11520012041. The next prime is 11520012059. The reversal of 11520012044 is 44021002511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11520012041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413837 + ... + 440795.

It is an arithmetic number, because the mean of its divisors is an integer number (845182520).

Almost surely, 2^11520012044 is an apocalyptic number.

It is an amenable number.

11520012044 is a deficient number, since it is larger than the sum of its proper divisors (8764368436).

11520012044 is a wasteful number, since it uses less digits than its factorization.

11520012044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27617 (or 27615 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 11520012044 its reverse (44021002511), we get a palindrome (55541014555).

The spelling of 11520012044 in words is "eleven billion, five hundred twenty million, twelve thousand, forty-four".