5661165065 has 4 divisors (see below), whose sum is σ = 6793398084. Its totient is φ = 4528932048.

The previous prime is 5661165061. The next prime is 5661165071. The reversal of 5661165065 is 5605611665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3115760761 + 2545404304 = 55819^2 + 50452^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661165065 - 2² = 5661165061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661165061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566116502 + ... + 566116511.

It is an arithmetic number, because the mean of its divisors is an integer number (1698349521).

Almost surely, 2^5661165065 is an apocalyptic number.

It is an amenable number.

5661165065 is a deficient number, since it is larger than the sum of its proper divisors (1132233019).

5661165065 is a wasteful number, since it uses less digits than its factorization.

5661165065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132233018.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 5661165065 is about 75240.7141446704. The cubic root of 5661165065 is about 1782.2499286260.

The spelling of 5661165065 in words is "five billion, six hundred sixty-one million, one hundred sixty-five thousand, sixty-five".