6436646882 has 4 divisors (see below), whose sum is σ = 9654970326. Its totient is φ = 3218323440.

The previous prime is 6436646869. The next prime is 6436646941. The reversal of 6436646882 is 2886466346.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3947734561 + 2488912321 = 62831^2 + 49889^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609161719 + ... + 1609161722.

Almost surely, 2^6436646882 is an apocalyptic number.

6436646882 is a deficient number, since it is larger than the sum of its proper divisors (3218323444).

6436646882 is a wasteful number, since it uses less digits than its factorization.

6436646882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218323443.

The product of its digits is 7962624, while the sum is 53.

The square root of 6436646882 is about 80228.7160685001. The cubic root of 6436646882 is about 1860.1725359276.

The spelling of 6436646882 in words is "six billion, four hundred thirty-six million, six hundred forty-six thousand, eight hundred eighty-two".