5565165961 has 4 divisors (see below), whose sum is σ = 5578448400. Its totient is φ = 5551883524.

The previous prime is 5565165959. The next prime is 5565166003. The reversal of 5565165961 is 1695615655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5565165961 - 2¹ = 5565165959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5565165901) 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 3 ways as a sum of consecutive naturals, for example, 6640591 + ... + 6641428.

It is an arithmetic number, because the mean of its divisors is an integer number (1394612100).

Almost surely, 2^5565165961 is an apocalyptic number.

It is an amenable number.

5565165961 is a deficient number, since it is larger than the sum of its proper divisors (13282439).

5565165961 is a wasteful number, since it uses less digits than its factorization.

5565165961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13282438.

The product of its digits is 1215000, while the sum is 49.

The square root of 5565165961 is about 74600.0399530724. The cubic root of 5565165961 is about 1772.1182849573.

The spelling of 5565165961 in words is "five billion, five hundred sixty-five million, one hundred sixty-five thousand, nine hundred sixty-one".