16657244666 has 8 divisors (see below), whose sum is σ = 25228448544. Its totient is φ = 8247761820.

The previous prime is 16657244633. The next prime is 16657244671. The reversal of 16657244666 is 66644275661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40430000 + ... + 40430411.

It is an arithmetic number, because the mean of its divisors is an integer number (3153556068).

Almost surely, 2^16657244666 is an apocalyptic number.

16657244666 is a deficient number, since it is larger than the sum of its proper divisors (8571203878).

16657244666 is a wasteful number, since it uses less digits than its factorization.

16657244666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80860516.

The product of its digits is 8709120, while the sum is 53.

The spelling of 16657244666 in words is "sixteen billion, six hundred fifty-seven million, two hundred forty-four thousand, six hundred sixty-six".