16661052747066 has 96 divisors (see below), whose sum is σ = 44199716057280. Its totient is φ = 4135645914624.

The previous prime is 16661052747061. The next prime is 16661052747193. The reversal of 16661052747066 is 66074725016661.

16661052747066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16661052746997 and 16661052747015.

It is not an unprimeable number, because it can be changed into a prime (16661052747061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128148256 + ... + 128278203.

It is an arithmetic number, because the mean of its divisors is an integer number (460413708930).

Almost surely, 2^{16661052747066} is an apocalyptic number.

16661052747066 is an abundant number, since it is smaller than the sum of its proper divisors (27538663310214).

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

16661052747066 is a wasteful number, since it uses less digits than its factorization.

16661052747066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256426508 (or 256426501 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 16661052747066 in words is "sixteen trillion, six hundred sixty-one billion, fifty-two million, seven hundred forty-seven thousand, sixty-six".