80321784368 has 80 divisors (see below), whose sum is σ = 180659437056. Its totient is φ = 33882831360.

The previous prime is 80321784353. The next prime is 80321784371. The reversal of 80321784368 is 86348712308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4102763 + ... + 4122293.

Almost surely, 2^80321784368 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 80321784368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90329718528).

80321784368 is an abundant number, since it is smaller than the sum of its proper divisors (100337652688).

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

80321784368 is a wasteful number, since it uses less digits than its factorization.

80321784368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20122 (or 20116 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 80321784368 in words is "eighty billion, three hundred twenty-one million, seven hundred eighty-four thousand, three hundred sixty-eight".