80440000005 has 16 divisors (see below), whose sum is σ = 130624956864. Its totient is φ = 42261014400.

The previous prime is 80439999977. The next prime is 80440000021. The reversal of 80440000005 is 50000004408.

It is not a de Polignac number, because 80440000005 - 2¹⁴ = 80439983621 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 40018896 + ... + 40020905.

It is an arithmetic number, because the mean of its divisors is an integer number (8164059804).

Almost surely, 2^80440000005 is an apocalyptic number.

It is an amenable number.

80440000005 is a deficient number, since it is larger than the sum of its proper divisors (50184956859).

80440000005 is a wasteful number, since it uses less digits than its factorization.

80440000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80039876.

The product of its (nonzero) digits is 640, while the sum is 21.

The spelling of 80440000005 in words is "eighty billion, four hundred forty million, five", and thus it is an aban number.