11056311161 has 16 divisors (see below), whose sum is σ = 13349629440. Its totient is φ = 8955360960.

The previous prime is 11056311113. The next prime is 11056311187. The reversal of 11056311161 is 16111365011.

11056311161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11056311161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11056311161.

It is not an unprimeable number, because it can be changed into a prime (11056211161) 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, 569870 + ... + 588951.

It is an arithmetic number, because the mean of its divisors is an integer number (834351840).

Almost surely, 2^11056311161 is an apocalyptic number.

It is an amenable number.

11056311161 is a deficient number, since it is larger than the sum of its proper divisors (2293318279).

11056311161 is a wasteful number, since it uses less digits than its factorization.

11056311161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158904.

The product of its (nonzero) digits is 540, while the sum is 26.

Adding to 11056311161 its reverse (16111365011), we get a palindrome (27167676172).

The spelling of 11056311161 in words is "eleven billion, fifty-six million, three hundred eleven thousand, one hundred sixty-one".