4220145161 has 16 divisors (see below), whose sum is σ = 4538073600. Its totient is φ = 3910253568.

The previous prime is 4220145151. The next prime is 4220145197. The reversal of 4220145161 is 1615410224.

4220145161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 4220145161 - 2²² = 4215950857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4220145161.

It is not an unprimeable number, because it can be changed into a prime (4220145101) 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, 477761 + ... + 486513.

It is an arithmetic number, because the mean of its divisors is an integer number (283629600).

Almost surely, 2^4220145161 is an apocalyptic number.

It is an amenable number.

4220145161 is a deficient number, since it is larger than the sum of its proper divisors (317928439).

4220145161 is a wasteful number, since it uses less digits than its factorization.

4220145161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9208.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 4220145161 is about 64962.6443504265. The cubic root of 4220145161 is about 1616.0041183817.

Adding to 4220145161 its reverse (1615410224), we get a palindrome (5835555385).

The spelling of 4220145161 in words is "four billion, two hundred twenty million, one hundred forty-five thousand, one hundred sixty-one".