4065360641 has 4 divisors (see below), whose sum is σ = 4065907284. Its totient is φ = 4064814000.

The previous prime is 4065360587. The next prime is 4065360709. The reversal of 4065360641 is 1460635604.

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 1327873600 + 2737487041 = 36440^2 + 52321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4065360641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4065362641) 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, 262010 + ... + 277091.

It is an arithmetic number, because the mean of its divisors is an integer number (1016476821).

Almost surely, 2^4065360641 is an apocalyptic number.

It is an amenable number.

4065360641 is a deficient number, since it is larger than the sum of its proper divisors (546643).

4065360641 is an equidigital number, since it uses as much as digits as its factorization.

4065360641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546642.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 4065360641 is about 63760.1806851267. The cubic root of 4065360641 is about 1596.0005110153. Note that the first 3 decimals are identical.

The spelling of 4065360641 in words is "four billion, sixty-five million, three hundred sixty thousand, six hundred forty-one".