660442066404 has 24 divisors (see below), whose sum is σ = 1541189832000. Its totient is φ = 220124734944.

The previous prime is 660442066399. The next prime is 660442066429. The reversal of 660442066404 is 404660244066.

660442066404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2705704 + ... + 2939679.

It is an arithmetic number, because the mean of its divisors is an integer number (64216243000).

Almost surely, 2^660442066404 is an apocalyptic number.

It is an amenable number.

660442066404 is an abundant number, since it is smaller than the sum of its proper divisors (880747765596).

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

660442066404 is a wasteful number, since it uses less digits than its factorization.

660442066404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655139 (or 5655137 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 660442066404 in words is "six hundred sixty billion, four hundred forty-two million, sixty-six thousand, four hundred four".