11511611116 has 12 divisors (see below), whose sum is σ = 20150526760. Its totient is φ = 5754317760.

The previous prime is 11511611107. The next prime is 11511611117. The reversal of 11511611116 is 61111611511.

It is not an unprimeable number, because it can be changed into a prime (11511611117) by changing a digit.

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, 354450 + ... + 385561.

Almost surely, 2^11511611116 is an apocalyptic number.

It is an amenable number.

11511611116 is a deficient number, since it is larger than the sum of its proper divisors (8638915644).

11511611116 is a wasteful number, since it uses less digits than its factorization.

11511611116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743904 (or 743902 counting only the distinct ones).

The product of its digits is 180, while the sum is 25.

The spelling of 11511611116 in words is "eleven billion, five hundred eleven million, six hundred eleven thousand, one hundred sixteen".