5543660565 has 12 divisors (see below), whose sum is σ = 9609011724. Its totient is φ = 2956618944.

The previous prime is 5543660513. The next prime is 5543660593. The reversal of 5543660565 is 5650663455.

5543660565 is a `hidden beast` number, since 5 + 5 + 4 + 36 + 605 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3212509041 + 2331151524 = 56679^2 + 48282^2 .

It is not a de Polignac number, because 5543660565 - 2²¹ = 5541563413 is a prime.

It is a super-2 number, since 2×5543660565² = 61464344919872238450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 123192457 = 5543660565 / (5 + 5 + 4 + 3 + 6 + 6 + 0 + 5 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5543660565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61596184 + ... + 61596273.

It is an arithmetic number, because the mean of its divisors is an integer number (800750977).

Almost surely, 2^5543660565 is an apocalyptic number.

It is an amenable number.

5543660565 is a deficient number, since it is larger than the sum of its proper divisors (4065351159).

5543660565 is a wasteful number, since it uses less digits than its factorization.

5543660565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123192468 (or 123192465 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The square root of 5543660565 is about 74455.7624700735. The cubic root of 5543660565 is about 1769.8326807268.

The spelling of 5543660565 in words is "five billion, five hundred forty-three million, six hundred sixty thousand, five hundred sixty-five".