111344660161 has 16 divisors (see below), whose sum is σ = 131413934080. Its totient is φ = 92318829840.

The previous prime is 111344660159. The next prime is 111344660227. The reversal of 111344660161 is 161066443111.

It is a cyclic number.

It is not a de Polignac number, because 111344660161 - 2¹ = 111344660159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111344660461) 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 15 ways as a sum of consecutive naturals, for example, 384100 + ... + 608458.

It is an arithmetic number, because the mean of its divisors is an integer number (8213370880).

Almost surely, 2^111344660161 is an apocalyptic number.

It is an amenable number.

111344660161 is a deficient number, since it is larger than the sum of its proper divisors (20069273919).

111344660161 is a wasteful number, since it uses less digits than its factorization.

111344660161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226684.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 111344660161 in words is "one hundred eleven billion, three hundred forty-four million, six hundred sixty thousand, one hundred sixty-one".