16661167156164 has 24 divisors (see below), whose sum is σ = 38879850881088. Its totient is φ = 5553180359200.

The previous prime is 16661167156163. The next prime is 16661167156171. The reversal of 16661167156164 is 46165176116661.

It is not an unprimeable number, because it can be changed into a prime (16661167156163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67625187 + ... + 67871114.

It is an arithmetic number, because the mean of its divisors is an integer number (1619993786712).

Almost surely, 2^{16661167156164} is an apocalyptic number.

It is an amenable number.

16661167156164 is an abundant number, since it is smaller than the sum of its proper divisors (22218683724924).

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

16661167156164 is a wasteful number, since it uses less digits than its factorization.

16661167156164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135506555 (or 135506553 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 57.

The spelling of 16661167156164 in words is "sixteen trillion, six hundred sixty-one billion, one hundred sixty-seven million, one hundred fifty-six thousand, one hundred sixty-four".