111171711161 has 8 divisors (see below), whose sum is σ = 131151880704. Its totient is φ = 92216165760.

The previous prime is 111171711113. The next prime is 111171711199. The reversal of 111171711161 is 161117171111.

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 111171711161 - 2⁶ = 111171711097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111171731161) 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 7 ways as a sum of consecutive naturals, for example, 256155800 + ... + 256156233.

It is an arithmetic number, because the mean of its divisors is an integer number (16393985088).

Almost surely, 2^111171711161 is an apocalyptic number.

It is an amenable number.

111171711161 is a deficient number, since it is larger than the sum of its proper divisors (19980169543).

111171711161 is an equidigital number, since it uses as much as digits as its factorization.

111171711161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512312071.

The product of its digits is 294, while the sum is 29.

Adding to 111171711161 its reverse (161117171111), we get a palindrome (272288882272).

The spelling of 111171711161 in words is "one hundred eleven billion, one hundred seventy-one million, seven hundred eleven thousand, one hundred sixty-one".