16554221960 has 128 divisors (see below), whose sum is σ = 41869440000. Its totient is φ = 5861237760.

The previous prime is 16554221939. The next prime is 16554221987. The reversal of 16554221960 is 6912245561.

16554221960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 671126 + ... + 695354.

It is an arithmetic number, because the mean of its divisors is an integer number (327105000).

Almost surely, 2^16554221960 is an apocalyptic number.

16554221960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16554221960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20934720000).

16554221960 is an abundant number, since it is smaller than the sum of its proper divisors (25315218040).

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

16554221960 is a wasteful number, since it uses less digits than its factorization.

16554221960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24319 (or 24315 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 16554221960 in words is "sixteen billion, five hundred fifty-four million, two hundred twenty-one thousand, nine hundred sixty".