16662365773688 has 8 divisors (see below), whose sum is σ = 31241935825680. Its totient is φ = 8331182886840.

The previous prime is 16662365773681. The next prime is 16662365773717. The reversal of 16662365773688 is 88637756326661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16662365773681) by changing a digit.

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 as a sum of consecutive naturals, namely, 1041397860848 + ... + 1041397860863.

It is an arithmetic number, because the mean of its divisors is an integer number (3905241978210).

Almost surely, 2^{16662365773688} is an apocalyptic number.

It is an amenable number.

16662365773688 is a deficient number, since it is larger than the sum of its proper divisors (14579570051992).

16662365773688 is a wasteful number, since it uses less digits than its factorization.

16662365773688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082795721717 (or 2082795721713 counting only the distinct ones).

The product of its digits is 2194698240, while the sum is 74.

The spelling of 16662365773688 in words is "sixteen trillion, six hundred sixty-two billion, three hundred sixty-five million, seven hundred seventy-three thousand, six hundred eighty-eight".