11561616116 has 12 divisors (see below), whose sum is σ = 20234350500. Its totient is φ = 5780373120.

The previous prime is 11561616113. The next prime is 11561616127. The reversal of 11561616116 is 61161616511.

It can be written as a sum of positive squares in 2 ways, for example, as 2953487716 + 8608128400 = 54346^2 + 92780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11561616113) 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 in 3 ways as a sum of consecutive naturals, for example, 44741 + ... + 158508.

It is an arithmetic number, because the mean of its divisors is an integer number (1686195875).

Almost surely, 2^11561616116 is an apocalyptic number.

It is an amenable number.

11561616116 is a deficient number, since it is larger than the sum of its proper divisors (8672734384).

11561616116 is a wasteful number, since it uses less digits than its factorization.

11561616116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217474 (or 217472 counting only the distinct ones).

The product of its digits is 6480, while the sum is 35.

The spelling of 11561616116 in words is "eleven billion, five hundred sixty-one million, six hundred sixteen thousand, one hundred sixteen".