16446089228544 has 90 divisors (see below), whose sum is σ = 49039262363630. Its totient is φ = 5482029735936.

The previous prime is 16446089228539. The next prime is 16446089228663. The reversal of 16446089228544 is 44582298064461.

It is a happy number.

16446089228544 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 6 + 0 + 89 + 2 + 2 + 8 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9157644345600 + 7288444882944 = 3026160^2 + 2699712^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 396538129 + ... + 396579600.

Almost surely, 2^{16446089228544} is an apocalyptic number.

It is an amenable number.

16446089228544 is an abundant number, since it is smaller than the sum of its proper divisors (32593173135086).

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

16446089228544 is an frugal number, since it uses more digits than its factorization.

16446089228544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793117757 (or 793117734 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 63.

The spelling of 16446089228544 in words is "sixteen trillion, four hundred forty-six billion, eighty-nine million, two hundred twenty-eight thousand, five hundred forty-four".