16397704224 has 144 divisors (see below), whose sum is σ = 50952361824. Its totient is φ = 4960972800.

The previous prime is 16397704201. The next prime is 16397704307. The reversal of 16397704224 is 42240779361.

16397704224 is a `hidden beast` number, since 1 + 639 + 7 + 7 + 0 + 4 + 2 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 16397704224.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2128219 + ... + 2135909.

It is an arithmetic number, because the mean of its divisors is an integer number (353835846).

Almost surely, 2^16397704224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16397704224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25476180912).

16397704224 is an abundant number, since it is smaller than the sum of its proper divisors (34554657600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16397704224 is a wasteful number, since it uses less digits than its factorization.

16397704224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391 (or 8380 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 16397704224 in words is "sixteen billion, three hundred ninety-seven million, seven hundred four thousand, two hundred twenty-four".