20206444361 has 2 divisors, whose sum is σ = 20206444362. Its totient is φ = 20206444360.

The previous prime is 20206444339. The next prime is 20206444367. The reversal of 20206444361 is 16344460202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20039233600 + 167210761 = 141560^2 + 12931^2 .

It is a cyclic number.

It is not a de Polignac number, because 20206444361 - 2¹⁴ = 20206427977 is a prime.

It is not a weakly prime, because it can be changed into another prime (20206444367) by changing a digit.

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 as a sum of consecutive naturals, namely, 10103222180 + 10103222181.

It is an arithmetic number, because the mean of its divisors is an integer number (10103222181).

Almost surely, 2^20206444361 is an apocalyptic number.

It is an amenable number.

20206444361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20206444361 is an equidigital number, since it uses as much as digits as its factorization.

20206444361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 20206444361 in words is "twenty billion, two hundred six million, four hundred forty-four thousand, three hundred sixty-one".