80555603309 has 2 divisors, whose sum is σ = 80555603310. Its totient is φ = 80555603308.

The previous prime is 80555603287. The next prime is 80555603311. The reversal of 80555603309 is 90330655508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73195679209 + 7359924100 = 270547^2 + 85790^2 .

It is a cyclic number.

It is not a de Polignac number, because 80555603309 - 2¹⁶ = 80555537773 is a prime.

Together with 80555603311, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80555603309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80555603339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40277801654 + 40277801655.

It is an arithmetic number, because the mean of its divisors is an integer number (40277801655).

Almost surely, 2^80555603309 is an apocalyptic number.

It is an amenable number.

80555603309 is a deficient number, since it is larger than the sum of its proper divisors (1).

80555603309 is an equidigital number, since it uses as much as digits as its factorization.

80555603309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 80555603309 in words is "eighty billion, five hundred fifty-five million, six hundred three thousand, three hundred nine".