16644007924 has 12 divisors (see below), whose sum is σ = 29914230724. Its totient is φ = 8097084864.

The previous prime is 16644007907. The next prime is 16644007927. The reversal of 16644007924 is 42970044661.

It can be written as a sum of positive squares in 2 ways, for example, as 14165760400 + 2478247524 = 119020^2 + 49782^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16644007927) by changing a digit.

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, 56229609 + ... + 56229904.

Almost surely, 2^16644007924 is an apocalyptic number.

It is an amenable number.

16644007924 is a deficient number, since it is larger than the sum of its proper divisors (13270222800).

16644007924 is a wasteful number, since it uses less digits than its factorization.

16644007924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112459554 (or 112459552 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 16644007924 in words is "sixteen billion, six hundred forty-four million, seven thousand, nine hundred twenty-four".