80432144321 has 2 divisors, whose sum is σ = 80432144322. Its totient is φ = 80432144320.

The previous prime is 80432144279. The next prime is 80432144327. The reversal of 80432144321 is 12344123408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75015184321 + 5416960000 = 273889^2 + 73600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80432144321 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80432144327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40216072160 + 40216072161.

It is an arithmetic number, because the mean of its divisors is an integer number (40216072161).

Almost surely, 2^80432144321 is an apocalyptic number.

It is an amenable number.

80432144321 is a deficient number, since it is larger than the sum of its proper divisors (1).

80432144321 is an equidigital number, since it uses as much as digits as its factorization.

80432144321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 80432144321 its reverse (12344123408), we get a palindrome (92776267729).

The spelling of 80432144321 in words is "eighty billion, four hundred thirty-two million, one hundred forty-four thousand, three hundred twenty-one".