11163231161 has 16 divisors (see below), whose sum is σ = 11850854400. Its totient is φ = 10498617360.

The previous prime is 11163231151. The next prime is 11163231181. The reversal of 11163231161 is 16113236111.

It is a happy number.

11163231161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11163231161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11163231161.

It is not an unprimeable number, because it can be changed into a prime (11163231151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244226 + ... + 286308.

It is an arithmetic number, because the mean of its divisors is an integer number (740678400).

Almost surely, 2^11163231161 is an apocalyptic number.

It is an amenable number.

11163231161 is a deficient number, since it is larger than the sum of its proper divisors (687623239).

11163231161 is a wasteful number, since it uses less digits than its factorization.

11163231161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42356.

The product of its digits is 648, while the sum is 26.

Adding to 11163231161 its reverse (16113236111), we get a palindrome (27276467272).

The spelling of 11163231161 in words is "eleven billion, one hundred sixty-three million, two hundred thirty-one thousand, one hundred sixty-one".