16444559949280 has 576 divisors, whose sum is σ = 44180216156160. Its totient is φ = 5769462972416.

The previous prime is 16444559949277. The next prime is 16444559949343. The reversal of 16444559949280 is 8294995544461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13446082749 + ... + 13446083971.

It is an arithmetic number, because the mean of its divisors is an integer number (76701764160).

Almost surely, 2^{16444559949280} is an apocalyptic number.

16444559949280 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 16444559949280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22090108078080).

16444559949280 is an abundant number, since it is smaller than the sum of its proper divisors (27735656206880).

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

16444559949280 is a wasteful number, since it uses less digits than its factorization.

16444559949280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 70.

The spelling of 16444559949280 in words is "sixteen trillion, four hundred forty-four billion, five hundred fifty-nine million, nine hundred forty-nine thousand, two hundred eighty".