16444448327820 has 24 divisors (see below), whose sum is σ = 46044455318064. Its totient is φ = 4385186220736.

The previous prime is 16444448327779. The next prime is 16444448327873. The reversal of 16444448327820 is 2872384444461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137037069339 + ... + 137037069458.

It is an arithmetic number, because the mean of its divisors is an integer number (1918518971586).

Almost surely, 2^{16444448327820} is an apocalyptic number.

16444448327820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16444448327820 is an abundant number, since it is smaller than the sum of its proper divisors (29600006990244).

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

16444448327820 is a wasteful number, since it uses less digits than its factorization.

16444448327820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274074138809 (or 274074138807 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 57.

The spelling of 16444448327820 in words is "sixteen trillion, four hundred forty-four billion, four hundred forty-eight million, three hundred twenty-seven thousand, eight hundred twenty".