80445040180 has 12 divisors (see below), whose sum is σ = 168934584420. Its totient is φ = 32178016064.

The previous prime is 80445040157. The next prime is 80445040183. The reversal of 80445040180 is 8104054408.

It can be written as a sum of positive squares in 2 ways, for example, as 46516136976 + 33928903204 = 215676^2 + 184198^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80445040183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011125985 + ... + 2011126024.

It is an arithmetic number, because the mean of its divisors is an integer number (14077882035).

Almost surely, 2^80445040180 is an apocalyptic number.

It is an amenable number.

80445040180 is an abundant number, since it is smaller than the sum of its proper divisors (88489544240).

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

80445040180 is a wasteful number, since it uses less digits than its factorization.

80445040180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022252018 (or 4022252016 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

Adding to 80445040180 its reverse (8104054408), we get a palindrome (88549094588).

The spelling of 80445040180 in words is "eighty billion, four hundred forty-five million, forty thousand, one hundred eighty".