4065216445 has 8 divisors (see below), whose sum is σ = 4879246680. Its totient is φ = 3251515200.

The previous prime is 4065216437. The next prime is 4065216451. The reversal of 4065216445 is 5446125604.

It can be written as a sum of positive squares in 4 ways, for example, as 138815524 + 3926400921 = 11782^2 + 62661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4065216445 - 2³ = 4065216437 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 54190 + ... + 105199.

It is an arithmetic number, because the mean of its divisors is an integer number (609905835).

Almost surely, 2^4065216445 is an apocalyptic number.

It is an amenable number.

4065216445 is a deficient number, since it is larger than the sum of its proper divisors (814030235).

4065216445 is a wasteful number, since it uses less digits than its factorization.

4065216445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164495.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 4065216445 is about 63759.0499066603. The cubic root of 4065216445 is about 1595.9816410526.

The spelling of 4065216445 in words is "four billion, sixty-five million, two hundred sixteen thousand, four hundred forty-five".