16660401344724 has 12 divisors (see below), whose sum is σ = 38874269804384. Its totient is φ = 5553467114904.

The previous prime is 16660401344707. The next prime is 16660401344761. The reversal of 16660401344724 is 42744310406661.

It is a happy number.

16660401344724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 694183389352 + ... + 694183389375.

Almost surely, 2^{16660401344724} is an apocalyptic number.

It is an amenable number.

16660401344724 is an abundant number, since it is smaller than the sum of its proper divisors (22213868459660).

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

16660401344724 is a wasteful number, since it uses less digits than its factorization.

16660401344724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388366778734 (or 1388366778732 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 48.

The spelling of 16660401344724 in words is "sixteen trillion, six hundred sixty billion, four hundred one million, three hundred forty-four thousand, seven hundred twenty-four".