6443536441 has 2 divisors, whose sum is σ = 6443536442. Its totient is φ = 6443536440.

The previous prime is 6443536433. The next prime is 6443536483. The reversal of 6443536441 is 1446353446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5241180816 + 1202355625 = 72396^2 + 34675^2 .

It is a cyclic number.

It is not a de Polignac number, because 6443536441 - 2³ = 6443536433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6443536394 and 6443536403.

It is not a weakly prime, because it can be changed into another prime (6443536241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221768220 + 3221768221.

It is an arithmetic number, because the mean of its divisors is an integer number (3221768221).

Almost surely, 2^6443536441 is an apocalyptic number.

It is an amenable number.

6443536441 is a deficient number, since it is larger than the sum of its proper divisors (1).

6443536441 is an equidigital number, since it uses as much as digits as its factorization.

6443536441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 40.

The square root of 6443536441 is about 80271.6415740951. The cubic root of 6443536441 is about 1860.8359868866.

Adding to 6443536441 its reverse (1446353446), we get a palindrome (7889889887).

The spelling of 6443536441 in words is "six billion, four hundred forty-three million, five hundred thirty-six thousand, four hundred forty-one".