16501663104 has 64 divisors (see below), whose sum is σ = 43928923440. Its totient is φ = 5488459776.

The previous prime is 16501663091. The next prime is 16501663109. The reversal of 16501663104 is 40136610561.

16501663104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501663109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128472 + ... + 222504.

Almost surely, 2^16501663104 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 16501663104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21964461720).

16501663104 is an abundant number, since it is smaller than the sum of its proper divisors (27427260336).

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

16501663104 is an equidigital number, since it uses as much as digits as its factorization.

16501663104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94507 (or 94495 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 16501663104 in words is "sixteen billion, five hundred one million, six hundred sixty-three thousand, one hundred four".