6445361441 has 2 divisors, whose sum is σ = 6445361442. Its totient is φ = 6445361440.

The previous prime is 6445361437. The next prime is 6445361459. The reversal of 6445361441 is 1441635446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4542220816 + 1903140625 = 67396^2 + 43625^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445361441 - 2² = 6445361437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6445361395 and 6445361404.

It is not a weakly prime, because it can be changed into another prime (6445361401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222680720 + 3222680721.

It is an arithmetic number, because the mean of its divisors is an integer number (3222680721).

Almost surely, 2^6445361441 is an apocalyptic number.

It is an amenable number.

6445361441 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445361441 is an equidigital number, since it uses as much as digits as its factorization.

6445361441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 38.

The square root of 6445361441 is about 80283.0084202131. The cubic root of 6445361441 is about 1861.0116515566.

Adding to 6445361441 its reverse (1441635446), we get a palindrome (7886996887).

The spelling of 6445361441 in words is "six billion, four hundred forty-five million, three hundred sixty-one thousand, four hundred forty-one".