4021443886973 has 2 divisors, whose sum is σ = 4021443886974. Its totient is φ = 4021443886972.

The previous prime is 4021443886949. The next prime is 4021443886991. The reversal of 4021443886973 is 3796883441204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2353763503204 + 1667680383769 = 1534198^2 + 1291387^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021443886973 - 2¹⁸ = 4021443624829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021443886373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010721943486 + 2010721943487.

It is an arithmetic number, because the mean of its divisors is an integer number (2010721943487).

Almost surely, 2^{4021443886973} is an apocalyptic number.

It is an amenable number.

4021443886973 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021443886973 is an equidigital number, since it uses as much as digits as its factorization.

4021443886973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27869184, while the sum is 59.

The spelling of 4021443886973 in words is "four trillion, twenty-one billion, four hundred forty-three million, eight hundred eighty-six thousand, nine hundred seventy-three".