424445205424561 has 2 divisors, whose sum is σ = 424445205424562. Its totient is φ = 424445205424560.

The previous prime is 424445205424547. The next prime is 424445205424571. The reversal of 424445205424561 is 165424502544424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256064996124961 + 168380209299600 = 16002031^2 + 12976140^2 .

It is a cyclic number.

It is not a de Polignac number, because 424445205424561 - 2¹³ = 424445205416369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 424445205424499 and 424445205424508.

It is not a weakly prime, because it can be changed into another prime (424445205424571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212222602712280 + 212222602712281.

It is an arithmetic number, because the mean of its divisors is an integer number (212222602712281).

Almost surely, 2^{424445205424561} is an apocalyptic number.

It is an amenable number.

424445205424561 is a deficient number, since it is larger than the sum of its proper divisors (1).

424445205424561 is an equidigital number, since it uses as much as digits as its factorization.

424445205424561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576000, while the sum is 52.

Adding to 424445205424561 its reverse (165424502544424), we get a palindrome (589869707968985).

The spelling of 424445205424561 in words is "four hundred twenty-four trillion, four hundred forty-five billion, two hundred five million, four hundred twenty-four thousand, five hundred sixty-one".