11511166661016 has 128 divisors (see below), whose sum is σ = 33641294803200. Its totient is φ = 3243487354880.

The previous prime is 11511166661003. The next prime is 11511166661087. The reversal of 11511166661016 is 61016666111511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15078561 + ... + 15823568.

It is an arithmetic number, because the mean of its divisors is an integer number (262822615650).

Almost surely, 2^{11511166661016} is an apocalyptic number.

It is an amenable number.

11511166661016 is an abundant number, since it is smaller than the sum of its proper divisors (22130128142184).

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

11511166661016 is a wasteful number, since it uses less digits than its factorization.

11511166661016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30902249 (or 30902245 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 42.

The spelling of 11511166661016 in words is "eleven trillion, five hundred eleven billion, one hundred sixty-six million, six hundred sixty-one thousand, sixteen".