16644186868322 has 32 divisors (see below), whose sum is σ = 27825746961600. Its totient is φ = 7413877171008.

The previous prime is 16644186868313. The next prime is 16644186868373. The reversal of 16644186868322 is 22386868144661.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 2933072 + ... + 6472347.

It is an arithmetic number, because the mean of its divisors is an integer number (869554592550).

Almost surely, 2^{16644186868322} is an apocalyptic number.

16644186868322 is a deficient number, since it is larger than the sum of its proper divisors (11181560093278).

16644186868322 is a wasteful number, since it uses less digits than its factorization.

16644186868322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407810.

The product of its digits is 127401984, while the sum is 65.

The spelling of 16644186868322 in words is "sixteen trillion, six hundred forty-four billion, one hundred eighty-six million, eight hundred sixty-eight thousand, three hundred twenty-two".