16844223456 has 144 divisors (see below), whose sum is σ = 49754734848. Its totient is φ = 5605718400.

The previous prime is 16844223421. The next prime is 16844223481. The reversal of 16844223456 is 65432244861.

16844223456 is a `hidden beast` number, since 168 + 442 + 2 + 3 + 45 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6305001 + ... + 6307671.

It is an arithmetic number, because the mean of its divisors is an integer number (345518992).

Almost surely, 2^16844223456 is an apocalyptic number.

16844223456 is a gapful number since it is divisible by the number (16) 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 16844223456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24877367424).

16844223456 is an abundant number, since it is smaller than the sum of its proper divisors (32910511392).

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

16844223456 is an equidigital number, since it uses as much as digits as its factorization.

16844223456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507 (or 3487 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The spelling of 16844223456 in words is "sixteen billion, eight hundred forty-four million, two hundred twenty-three thousand, four hundred fifty-six".