2066051565 has 48 divisors (see below), whose sum is σ = 3863431728. Its totient is φ = 1017489408.

The previous prime is 2066051563. The next prime is 2066051587. The reversal of 2066051565 is 5651506602.

It is a happy number.

2066051565 is a `hidden beast` number, since 20 + 6 + 60 + 515 + 65 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 282340809 + 1783710756 = 16803^2 + 42234^2 .

It is not a de Polignac number, because 2066051565 - 2¹ = 2066051563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066051563) 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 47 ways as a sum of consecutive naturals, for example, 15067 + ... + 66023.

It is an arithmetic number, because the mean of its divisors is an integer number (80488161).

Almost surely, 2^2066051565 is an apocalyptic number.

It is an amenable number.

2066051565 is a deficient number, since it is larger than the sum of its proper divisors (1797380163).

2066051565 is a wasteful number, since it uses less digits than its factorization.

2066051565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51038 (or 51035 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2066051565 is about 45453.8399367974. The cubic root of 2066051565 is about 1273.6410619164.

The spelling of 2066051565 in words is "two billion, sixty-six million, fifty-one thousand, five hundred sixty-five".