20043442447277 has 2 divisors, whose sum is σ = 20043442447278. Its totient is φ = 20043442447276.

The previous prime is 20043442447247. The next prime is 20043442447289. The reversal of 20043442447277 is 77274424434002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12080949286756 + 7962493160521 = 3475766^2 + 2821789^2 .

It is a cyclic number.

It is not a de Polignac number, because 20043442447277 - 2³⁴ = 20026262578093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20043442447247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021721223638 + 10021721223639.

It is an arithmetic number, because the mean of its divisors is an integer number (10021721223639).

Almost surely, 2^{20043442447277} is an apocalyptic number.

It is an amenable number.

20043442447277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043442447277 is an equidigital number, since it uses as much as digits as its factorization.

20043442447277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8429568, while the sum is 50.

The spelling of 20043442447277 in words is "twenty trillion, forty-three billion, four hundred forty-two million, four hundred forty-seven thousand, two hundred seventy-seven".