80800844840 has 16 divisors (see below), whose sum is σ = 181801900980. Its totient is φ = 32320337920.

The previous prime is 80800844837. The next prime is 80800844849. The reversal of 80800844840 is 4844800808.

It can be written as a sum of positive squares in 2 ways, for example, as 76774434724 + 4026410116 = 277082^2 + 63454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80800844791 and 80800844800.

It is not an unprimeable number, because it can be changed into a prime (80800844849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010010521 + ... + 1010010600.

Almost surely, 2^80800844840 is an apocalyptic number.

It is an amenable number.

80800844840 is an abundant number, since it is smaller than the sum of its proper divisors (101001056140).

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

80800844840 is a wasteful number, since it uses less digits than its factorization.

80800844840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020021132 (or 2020021128 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 44.

The spelling of 80800844840 in words is "eighty billion, eight hundred million, eight hundred forty-four thousand, eight hundred forty".