16554222720000 has 3300 divisors, whose sum is σ = 75860821391520. Its totient is φ = 3584673792000.

The previous prime is 16554222719989. The next prime is 16554222720001. The reversal of 16554222720000 is 2722245561.

16554222720000 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 422 + 27 + 200 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554222720001) by changing a digit.

It is a polite number, since it can be written in 299 ways as a sum of consecutive naturals, for example, 871274879991 + ... + 871274880009.

Almost surely, 2^{16554222720000} is an apocalyptic number.

16554222720000 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 16554222720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37930410695760).

16554222720000 is an abundant number, since it is smaller than the sum of its proper divisors (59306598671520).

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

16554222720000 is an frugal number, since it uses more digits than its factorization.

16554222720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

Adding to 16554222720000 its reverse (2722245561), we get a palindrome (16556944965561).

The spelling of 16554222720000 in words is "sixteen trillion, five hundred fifty-four billion, two hundred twenty-two million, seven hundred twenty thousand".