16566613432 has 8 divisors (see below), whose sum is σ = 31062400200. Its totient is φ = 8283306712.

The previous prime is 16566613409. The next prime is 16566613451. The reversal of 16566613432 is 23431666561.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035413332 + ... + 1035413347.

It is an arithmetic number, because the mean of its divisors is an integer number (3882800025).

Almost surely, 2^16566613432 is an apocalyptic number.

It is an amenable number.

16566613432 is a deficient number, since it is larger than the sum of its proper divisors (14495786768).

16566613432 is a wasteful number, since it uses less digits than its factorization.

16566613432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070826685 (or 2070826681 counting only the distinct ones).

The product of its digits is 466560, while the sum is 43.

The spelling of 16566613432 in words is "sixteen billion, five hundred sixty-six million, six hundred thirteen thousand, four hundred thirty-two".