443145452520721 has 2 divisors, whose sum is σ = 443145452520722. Its totient is φ = 443145452520720.

The previous prime is 443145452520593. The next prime is 443145452520773. The reversal of 443145452520721 is 127025254541344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337410792875025 + 105734659645696 = 18368745^2 + 10282736^2 .

It is a cyclic number.

It is not a de Polignac number, because 443145452520721 - 2⁷ = 443145452520593 is a prime.

It is not a weakly prime, because it can be changed into another prime (443145452520791) 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, 221572726260360 + 221572726260361.

It is an arithmetic number, because the mean of its divisors is an integer number (221572726260361).

Almost surely, 2^{443145452520721} is an apocalyptic number.

It is an amenable number.

443145452520721 is a deficient number, since it is larger than the sum of its proper divisors (1).

443145452520721 is an equidigital number, since it uses as much as digits as its factorization.

443145452520721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376000, while the sum is 49.

The spelling of 443145452520721 in words is "four hundred forty-three trillion, one hundred forty-five billion, four hundred fifty-two million, five hundred twenty thousand, seven hundred twenty-one".