16544744018 has 8 divisors (see below), whose sum is σ = 27073217520. Its totient is φ = 7520338180.

The previous prime is 16544744003. The next prime is 16544744023. The reversal of 16544744018 is 81044744561.

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

It is a super-3 number, since 3×16544744018³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 16544744018.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376016888 + ... + 376016931.

It is an arithmetic number, because the mean of its divisors is an integer number (3384152190).

Almost surely, 2^16544744018 is an apocalyptic number.

16544744018 is a deficient number, since it is larger than the sum of its proper divisors (10528473502).

16544744018 is a wasteful number, since it uses less digits than its factorization.

16544744018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752033832.

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 16544744018 in words is "sixteen billion, five hundred forty-four million, seven hundred forty-four thousand, eighteen".