16554516616 has 128 divisors (see below), whose sum is σ = 36443520000. Its totient is φ = 6973274880.

The previous prime is 16554516569. The next prime is 16554516647. The reversal of 16554516616 is 61661545561.

16554516616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 33175135 + ... + 33175633.

It is an arithmetic number, because the mean of its divisors is an integer number (284715000).

Almost surely, 2^16554516616 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 16554516616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18221760000).

16554516616 is an abundant number, since it is smaller than the sum of its proper divisors (19889003384).

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

16554516616 is a wasteful number, since it uses less digits than its factorization.

16554516616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 1015 counting only the distinct ones).

The product of its digits is 648000, while the sum is 46.

The spelling of 16554516616 in words is "sixteen billion, five hundred fifty-four million, five hundred sixteen thousand, six hundred sixteen".