80810331457 has 2 divisors, whose sum is σ = 80810331458. Its totient is φ = 80810331456.

The previous prime is 80810331451. The next prime is 80810331461. The reversal of 80810331457 is 75413301808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66448466176 + 14361865281 = 257776^2 + 119841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80810331457 is a prime.

It is not a weakly prime, because it can be changed into another prime (80810331451) 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, 40405165728 + 40405165729.

It is an arithmetic number, because the mean of its divisors is an integer number (40405165729).

Almost surely, 2^80810331457 is an apocalyptic number.

It is an amenable number.

80810331457 is a deficient number, since it is larger than the sum of its proper divisors (1).

80810331457 is an equidigital number, since it uses as much as digits as its factorization.

80810331457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 80810331457 in words is "eighty billion, eight hundred ten million, three hundred thirty-one thousand, four hundred fifty-seven".