111606160505505 has 16 divisors (see below), whose sum is σ = 183396069155904. Its totient is φ = 57914548153920.

The previous prime is 111606160505503. The next prime is 111606160505569. The reversal of 111606160505505 is 505505061606111.

It is not a de Polignac number, because 111606160505505 - 2¹ = 111606160505503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111606160505503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100546089991 + ... + 100546091100.

It is an arithmetic number, because the mean of its divisors is an integer number (11462254322244).

Almost surely, 2^{111606160505505} is an apocalyptic number.

111606160505505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111606160505505 is a deficient number, since it is larger than the sum of its proper divisors (71789908650399).

111606160505505 is a wasteful number, since it uses less digits than its factorization.

111606160505505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201092181136.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 111606160505505 in words is "one hundred eleven trillion, six hundred six billion, one hundred sixty million, five hundred five thousand, five hundred five".