6664206464016 has 20 divisors (see below), whose sum is σ = 17215866698832. Its totient is φ = 2221402154656.

The previous prime is 6664206464009. The next prime is 6664206464017. The reversal of 6664206464016 is 6104646024666.

It is a self number, because there is not a number n which added to its sum of digits gives 6664206464016.

It is not an unprimeable number, because it can be changed into a prime (6664206464017) 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 3 ways as a sum of consecutive naturals, for example, 69418817286 + ... + 69418817381.

Almost surely, 2^{6664206464016} is an apocalyptic number.

It is an amenable number.

6664206464016 is an abundant number, since it is smaller than the sum of its proper divisors (10551660234816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6664206464016 is a wasteful number, since it uses less digits than its factorization.

6664206464016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138837634678 (or 138837634672 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 51.

The spelling of 6664206464016 in words is "six trillion, six hundred sixty-four billion, two hundred six million, four hundred sixty-four thousand, sixteen".