16224478220544 has 576 divisors, whose sum is σ = 48412503014400. Its totient is φ = 4822532014080.

The previous prime is 16224478220543. The next prime is 16224478220623. The reversal of 16224478220544 is 44502287442261.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16224478220543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12645734527 + ... + 12645735809.

It is an arithmetic number, because the mean of its divisors is an integer number (84049484400).

Almost surely, 2^{16224478220544} 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 16224478220544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24206251507200).

16224478220544 is an abundant number, since it is smaller than the sum of its proper divisors (32188024793856).

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

16224478220544 is a wasteful number, since it uses less digits than its factorization.

16224478220544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 51.

The spelling of 16224478220544 in words is "sixteen trillion, two hundred twenty-four billion, four hundred seventy-eight million, two hundred twenty thousand, five hundred forty-four".