4427645161 has 2 divisors, whose sum is σ = 4427645162. Its totient is φ = 4427645160.

The previous prime is 4427645149. The next prime is 4427645197. The reversal of 4427645161 is 1615467244.

4427645161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3504640000 + 923005161 = 59200^2 + 30381^2 .

It is a cyclic number.

It is not a de Polignac number, because 4427645161 - 2¹¹ = 4427643113 is a prime.

It is not a weakly prime, because it can be changed into another prime (4427645141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2213822580 + 2213822581.

It is an arithmetic number, because the mean of its divisors is an integer number (2213822581).

Almost surely, 2^4427645161 is an apocalyptic number.

It is an amenable number.

4427645161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4427645161 is an equidigital number, since it uses as much as digits as its factorization.

4427645161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 4427645161 is about 66540.5527554438. The cubic root of 4427645161 is about 1642.0672375926.

The spelling of 4427645161 in words is "four billion, four hundred twenty-seven million, six hundred forty-five thousand, one hundred sixty-one".