18445891477296 has 40 divisors (see below), whose sum is σ = 47652104355840. Its totient is φ = 6148602358336.

The previous prime is 18445891477177. The next prime is 18445891477309. The reversal of 18445891477296 is 69277419854481.

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, 11524345 + ... + 13026983.

It is an arithmetic number, because the mean of its divisors is an integer number (1191302608896).

Almost surely, 2^{18445891477296} is an apocalyptic number.

18445891477296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18445891477296 is an abundant number, since it is smaller than the sum of its proper divisors (29206212878544).

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

18445891477296 is a wasteful number, since it uses less digits than its factorization.

18445891477296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758393 (or 1758387 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 75.

The spelling of 18445891477296 in words is "eighteen trillion, four hundred forty-five billion, eight hundred ninety-one million, four hundred seventy-seven thousand, two hundred ninety-six".