80122446818 has 6 divisors (see below), whose sum is σ = 120184270689. Its totient is φ = 40061023256.

The previous prime is 80122446809. The next prime is 80122446821. The reversal of 80122446818 is 81864422108.

It can be written as a sum of positive squares in 2 ways, for example, as 80121265249 + 1181569 = 283057^2 + 1087^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=200153.

It is a Duffinian number.

It is a Curzon 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 2 ways as a sum of consecutive naturals, for example, 300230 + ... + 500382.

Almost surely, 2^80122446818 is an apocalyptic number.

80122446818 is a deficient number, since it is larger than the sum of its proper divisors (40061823871).

80122446818 is an frugal number, since it uses more digits than its factorization.

80122446818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400308 (or 200155 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 44.

The spelling of 80122446818 in words is "eighty billion, one hundred twenty-two million, four hundred forty-six thousand, eight hundred eighteen".