80840555473 has 2 divisors, whose sum is σ = 80840555474. Its totient is φ = 80840555472.

The previous prime is 80840555461. The next prime is 80840555491. The reversal of 80840555473 is 37455504808.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78496349584 + 2344205889 = 280172^2 + 48417^2 .

It is a cyclic number.

It is not a de Polignac number, because 80840555473 - 2⁵ = 80840555441 is a prime.

It is not a weakly prime, because it can be changed into another prime (80840555773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40420277736 + 40420277737.

It is an arithmetic number, because the mean of its divisors is an integer number (40420277737).

Almost surely, 2^80840555473 is an apocalyptic number.

It is an amenable number.

80840555473 is a deficient number, since it is larger than the sum of its proper divisors (1).

80840555473 is an equidigital number, since it uses as much as digits as its factorization.

80840555473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 80840555473 in words is "eighty billion, eight hundred forty million, five hundred fifty-five thousand, four hundred seventy-three".