5611957569 has 9 divisors (see below), whose sum is σ = 8106485569. Its totient is φ = 3741155220.

The previous prime is 5611957537. The next prime is 5611957579. The reversal of 5611957569 is 9657591165.

The square root of 5611957569 is 74913.

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

5611957569 is a `hidden beast` number, since 5 + 6 + 1 + 1 + 9 + 575 + 69 = 666.

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

It is not a de Polignac number, because 5611957569 - 2⁵ = 5611957537 is a prime.

It is a super-2 number, since 2×5611957569² = 62988135512512779522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5611957529) 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 8 ways as a sum of consecutive naturals, for example, 212254 + ... + 237224.

Almost surely, 2^5611957569 is an apocalyptic number.

5611957569 is the 74913-rd square number.

5611957569 is the 37457-th centered octagonal number.

It is an amenable number.

5611957569 is a deficient number, since it is larger than the sum of its proper divisors (2494528000).

5611957569 is an frugal number, since it uses more digits than its factorization.

5611957569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49948 (or 24974 counting only the distinct ones).

The product of its digits is 2551500, while the sum is 54.

The cubic root of 5611957569 is about 1777.0710541326.

The spelling of 5611957569 in words is "five billion, six hundred eleven million, nine hundred fifty-seven thousand, five hundred sixty-nine".