6643884883466 has 8 divisors (see below), whose sum is σ = 9975704263140. Its totient is φ = 3318650129088.

The previous prime is 6643884883457. The next prime is 6643884883481.

6643884883466 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 5484987420025 + 1158897463441 = 2342005^2 + 1076521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6643884883393 and 6643884883402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646153801 + ... + 1646157836.

Almost surely, 2^{6643884883466} is an apocalyptic number.

6643884883466 is a deficient number, since it is larger than the sum of its proper divisors (3331819379674).

6643884883466 is a wasteful number, since it uses less digits than its factorization.

6643884883466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292312648.

The product of its digits is 3057647616, while the sum is 74.

The spelling of 6643884883466 in words is "six trillion, six hundred forty-three billion, eight hundred eighty-four million, eight hundred eighty-three thousand, four hundred sixty-six".