11164669569 has 9 divisors (see below), whose sum is σ = 16127202819. Its totient is φ = 7442901720.

The previous prime is 11164669543. The next prime is 11164669577. The reversal of 11164669569 is 96596646111.

The square root of 11164669569 is 105663.

It is a perfect power (a square), and thus also a powerful number.

11164669569 is a `hidden beast` number, since 1 + 1 + 16 + 4 + 6 + 69 + 569 = 666.

11164669569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10386259569 + 778410000 = 101913^2 + 27900^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 11164669569 - 2¹⁵ = 11164636801 is a prime.

It is a super-2 number, since 2×11164669569² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11164669519) 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 8 ways as a sum of consecutive naturals, for example, 299379 + ... + 334599.

Almost surely, 2^11164669569 is an apocalyptic number.

11164669569 is the 105663-rd square number.

11164669569 is the 52832-nd centered octagonal number.

It is an amenable number.

11164669569 is a deficient number, since it is larger than the sum of its proper divisors (4962533250).

11164669569 is an frugal number, since it uses more digits than its factorization.

11164669569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70448 (or 35224 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The spelling of 11164669569 in words is "eleven billion, one hundred sixty-four million, six hundred sixty-nine thousand, five hundred sixty-nine".