2065452561 has 16 divisors (see below), whose sum is σ = 3061437120. Its totient is φ = 1376290080.

The previous prime is 2065452457. The next prime is 2065452563. The reversal of 2065452561 is 1652545602.

2065452561 is a `hidden beast` number, since 20 + 6 + 54 + 525 + 61 = 666.

It is not a de Polignac number, because 2065452561 - 2¹⁵ = 2065419793 is a prime.

It is a super-4 number, since 4×2065452561⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2065452563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40366 + ... + 75896.

It is an arithmetic number, because the mean of its divisors is an integer number (191339820).

Almost surely, 2^2065452561 is an apocalyptic number.

It is an amenable number.

2065452561 is a deficient number, since it is larger than the sum of its proper divisors (995984559).

2065452561 is a wasteful number, since it uses less digits than its factorization.

2065452561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37693 (or 37687 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 2065452561 is about 45447.2503128627. The cubic root of 2065452561 is about 1273.5179624021.

The spelling of 2065452561 in words is "two billion, sixty-five million, four hundred fifty-two thousand, five hundred sixty-one".