80004457728 has 576 divisors, whose sum is σ = 263161893120. Its totient is φ = 23824171008.

The previous prime is 80004457649. The next prime is 80004457733. The reversal of 80004457728 is 82775440008.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 583974076 + ... + 583974212.

Almost surely, 2^80004457728 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 80004457728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131580946560).

80004457728 is an abundant number, since it is smaller than the sum of its proper divisors (183157435392).

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

80004457728 is a wasteful number, since it uses less digits than its factorization.

80004457728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The spelling of 80004457728 in words is "eighty billion, four million, four hundred fifty-seven thousand, seven hundred twenty-eight".