448439091816 has 32 divisors (see below), whose sum is σ = 1180102874400. Its totient is φ = 141612344640.

The previous prime is 448439091799. The next prime is 448439091829. The reversal of 448439091816 is 618190934844.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 491709075 + ... + 491709986.

It is an arithmetic number, because the mean of its divisors is an integer number (36878214825).

Almost surely, 2^448439091816 is an apocalyptic number.

It is an amenable number.

448439091816 is an abundant number, since it is smaller than the sum of its proper divisors (731663782584).

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

448439091816 is a wasteful number, since it uses less digits than its factorization.

448439091816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983419089 (or 983419085 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 448439091816 in words is "four hundred forty-eight billion, four hundred thirty-nine million, ninety-one thousand, eight hundred sixteen".