16021166616066 has 32 divisors (see below), whose sum is σ = 32345907378048. Its totient is φ = 5289993561600.

The previous prime is 16021166616031. The next prime is 16021166616073. The reversal of 16021166616066 is 66061666112061.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24727501 + ... + 25367136.

It is an arithmetic number, because the mean of its divisors is an integer number (1010809605564).

Almost surely, 2^{16021166616066} is an apocalyptic number.

16021166616066 is an abundant number, since it is smaller than the sum of its proper divisors (16324740761982).

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

16021166616066 is a wasteful number, since it uses less digits than its factorization.

16021166616066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50095146.

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 16021166616066 in words is "sixteen trillion, twenty-one billion, one hundred sixty-six million, six hundred sixteen thousand, sixty-six".