4220044642061 has 2 divisors, whose sum is σ = 4220044642062. Its totient is φ = 4220044642060.

The previous prime is 4220044642027. The next prime is 4220044642153. The reversal of 4220044642061 is 1602464400224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2931649386436 + 1288395255625 = 1712206^2 + 1135075^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220044642061 - 2⁶ = 4220044641997 is a prime.

It is a super-2 number, since 2×4220044642061² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4220044602061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110022321030 + 2110022321031.

It is an arithmetic number, because the mean of its divisors is an integer number (2110022321031).

Almost surely, 2^{4220044642061} is an apocalyptic number.

It is an amenable number.

4220044642061 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220044642061 is an equidigital number, since it uses as much as digits as its factorization.

4220044642061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 35.

The spelling of 4220044642061 in words is "four trillion, two hundred twenty billion, forty-four million, six hundred forty-two thousand, sixty-one".