11511611210044 has 12 divisors (see below), whose sum is σ = 21976712310168. Its totient is φ = 5232550550000.

The previous prime is 11511611210017. The next prime is 11511611210053. The reversal of 11511611210044 is 44001211611511.

It is a junction number, because it is equal to n+sod(n) for n = 11511611209994 and 11511611210021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130813763707 + ... + 130813763794.

It is an arithmetic number, because the mean of its divisors is an integer number (1831392692514).

Almost surely, 2^{11511611210044} is an apocalyptic number.

It is an amenable number.

11511611210044 is a deficient number, since it is larger than the sum of its proper divisors (10465101100124).

11511611210044 is a wasteful number, since it uses less digits than its factorization.

11511611210044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261627527516 (or 261627527514 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 28.

Adding to 11511611210044 its reverse (44001211611511), we get a palindrome (55512822821555).

The spelling of 11511611210044 in words is "eleven trillion, five hundred eleven billion, six hundred eleven million, two hundred ten thousand, forty-four".