6643136313466 has 8 divisors (see below), whose sum is σ = 10063364910804. Its totient is φ = 3288681343200.

The previous prime is 6643136313433. The next prime is 6643136313503.

6643136313466 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 5773346922841 + 869789390625 = 2402779^2 + 932625^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 16443406515 + ... + 16443406918.

Almost surely, 2^{6643136313466} is an apocalyptic number.

6643136313466 is a deficient number, since it is larger than the sum of its proper divisors (3420228597338).

6643136313466 is a wasteful number, since it uses less digits than its factorization.

6643136313466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32886813536.

The product of its digits is 10077696, while the sum is 52.

The spelling of 6643136313466 in words is "six trillion, six hundred forty-three billion, one hundred thirty-six million, three hundred thirteen thousand, four hundred sixty-six".