16664549759 has 8 divisors (see below), whose sum is σ = 19577932752. Its totient is φ = 13984237440.

The previous prime is 16664549723. The next prime is 16664549771. The reversal of 16664549759 is 95794546661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16664549759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16664549959) 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, 58267514 + ... + 58267799.

It is an arithmetic number, because the mean of its divisors is an integer number (2447241594).

Almost surely, 2^16664549759 is an apocalyptic number.

16664549759 is a deficient number, since it is larger than the sum of its proper divisors (2913382993).

16664549759 is a wasteful number, since it uses less digits than its factorization.

16664549759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116535337.

The product of its digits is 48988800, while the sum is 62.

The spelling of 16664549759 in words is "sixteen billion, six hundred sixty-four million, five hundred forty-nine thousand, seven hundred fifty-nine".