80444408040 has 80 divisors (see below), whose sum is σ = 270382604580. Its totient is φ = 21451841280.

The previous prime is 80444407991. The next prime is 80444408059. The reversal of 80444408040 is 4080444408.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77810870916 + 2633537124 = 278946^2 + 51318^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80444407986 and 80444408004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12411021 + ... + 12417500.

Almost surely, 2^80444408040 is an apocalyptic number.

It is an amenable number.

80444408040 is an abundant number, since it is smaller than the sum of its proper divisors (189938196540).

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

80444408040 is a wasteful number, since it uses less digits than its factorization.

80444408040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24828544 (or 24828531 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The spelling of 80444408040 in words is "eighty billion, four hundred forty-four million, four hundred eight thousand, forty".