80440223917 has 2 divisors, whose sum is σ = 80440223918. Its totient is φ = 80440223916.

The previous prime is 80440223911. The next prime is 80440224013. The reversal of 80440223917 is 71932204408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45394137481 + 35046086436 = 213059^2 + 187206^2 .

It is a cyclic number.

It is not a de Polignac number, because 80440223917 - 2³¹ = 78292740269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80440223917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80440223911) by changing a digit.

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 as a sum of consecutive naturals, namely, 40220111958 + 40220111959.

It is an arithmetic number, because the mean of its divisors is an integer number (40220111959).

Almost surely, 2^80440223917 is an apocalyptic number.

It is an amenable number.

80440223917 is a deficient number, since it is larger than the sum of its proper divisors (1).

80440223917 is an equidigital number, since it uses as much as digits as its factorization.

80440223917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 80440223917 in words is "eighty billion, four hundred forty million, two hundred twenty-three thousand, nine hundred seventeen".