80844488005 has 4 divisors (see below), whose sum is σ = 97013385612. Its totient is φ = 64675590400.

The previous prime is 80844488003. The next prime is 80844488009. The reversal of 80844488005 is 50088444808.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19609521156 + 61234966849 = 140034^2 + 247457^2 .

It is not a de Polignac number, because 80844488005 - 2¹ = 80844488003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80844488005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80844488003) 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, 8084448796 + ... + 8084448805.

It is an arithmetic number, because the mean of its divisors is an integer number (24253346403).

Almost surely, 2^80844488005 is an apocalyptic number.

It is an amenable number.

80844488005 is a deficient number, since it is larger than the sum of its proper divisors (16168897607).

80844488005 is a wasteful number, since it uses less digits than its factorization.

80844488005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16168897606.

The product of its (nonzero) digits is 1310720, while the sum is 49.

The spelling of 80844488005 in words is "eighty billion, eight hundred forty-four million, four hundred eighty-eight thousand, five".