16661973773982 has 32 divisors (see below), whose sum is σ = 33381948096000. Its totient is φ = 5544325817888.

The previous prime is 16661973773971. The next prime is 16661973774013. The reversal of 16661973773982 is 28937737916661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52886788 + ... + 53200904.

It is an arithmetic number, because the mean of its divisors is an integer number (1043185878000).

Almost surely, 2^{16661973773982} is an apocalyptic number.

16661973773982 is an abundant number, since it is smaller than the sum of its proper divisors (16719974322018).

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

16661973773982 is a wasteful number, since it uses less digits than its factorization.

16661973773982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329480.

The product of its digits is 864162432, while the sum is 75.

The spelling of 16661973773982 in words is "sixteen trillion, six hundred sixty-one billion, nine hundred seventy-three million, seven hundred seventy-three thousand, nine hundred eighty-two".