6446063533 has 12 divisors (see below), whose sum is σ = 8075289180. Its totient is φ = 5100181632.

The previous prime is 6446063527. The next prime is 6446063543. The reversal of 6446063533 is 3353606446.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2493803844 + 3952259689 = 49938^2 + 62867^2 .

It is not a de Polignac number, because 6446063533 - 2⁹ = 6446063021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446063543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5059068 + ... + 5060341.

It is an arithmetic number, because the mean of its divisors is an integer number (672940765).

Almost surely, 2^6446063533 is an apocalyptic number.

It is an amenable number.

6446063533 is a deficient number, since it is larger than the sum of its proper divisors (1629225647).

6446063533 is a wasteful number, since it uses less digits than its factorization.

6446063533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10119436 (or 10119429 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 40.

The square root of 6446063533 is about 80287.3809075872. The cubic root of 6446063533 is about 1861.0792223187.

Adding to 6446063533 its reverse (3353606446), we get a palindrome (9799669979).

The spelling of 6446063533 in words is "six billion, four hundred forty-six million, sixty-three thousand, five hundred thirty-three".