80728004440 has 16 divisors (see below), whose sum is σ = 181638010080. Its totient is φ = 32291201760.

The previous prime is 80728004429. The next prime is 80728004519. The reversal of 80728004440 is 4440082708.

It is a self number, because there is not a number n which added to its sum of digits gives 80728004440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009100016 + ... + 1009100095.

It is an arithmetic number, because the mean of its divisors is an integer number (11352375630).

Almost surely, 2^80728004440 is an apocalyptic number.

It is an amenable number.

80728004440 is an abundant number, since it is smaller than the sum of its proper divisors (100910005640).

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

80728004440 is a wasteful number, since it uses less digits than its factorization.

80728004440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018200122 (or 2018200118 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 37.

The spelling of 80728004440 in words is "eighty billion, seven hundred twenty-eight million, four thousand, four hundred forty".