116561566111 has 8 divisors (see below), whose sum is σ = 122699545200. Its totient is φ = 110423903040.

The previous prime is 116561566067. The next prime is 116561566123. The reversal of 116561566111 is 111665165611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 116561566111 - 2¹⁵ = 116561533343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116561566141) 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, 1261221 + ... + 1350481.

It is an arithmetic number, because the mean of its divisors is an integer number (15337443150).

Almost surely, 2^116561566111 is an apocalyptic number.

116561566111 is a deficient number, since it is larger than the sum of its proper divisors (6137979089).

116561566111 is an equidigital number, since it uses as much as digits as its factorization.

116561566111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158009.

The product of its digits is 32400, while the sum is 40.

The spelling of 116561566111 in words is "one hundred sixteen billion, five hundred sixty-one million, five hundred sixty-six thousand, one hundred eleven".