80740807409 has 2 divisors, whose sum is σ = 80740807410. Its totient is φ = 80740807408.

The previous prime is 80740807397. The next prime is 80740807453. The reversal of 80740807409 is 90470804708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41575210000 + 39165597409 = 203900^2 + 197903^2 .

It is a cyclic number.

It is not a de Polignac number, because 80740807409 - 2¹² = 80740803313 is a prime.

It is not a weakly prime, because it can be changed into another prime (80740801409) 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, 40370403704 + 40370403705.

It is an arithmetic number, because the mean of its divisors is an integer number (40370403705).

Almost surely, 2^80740807409 is an apocalyptic number.

It is an amenable number.

80740807409 is a deficient number, since it is larger than the sum of its proper divisors (1).

80740807409 is an equidigital number, since it uses as much as digits as its factorization.

80740807409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 80740807409 in words is "eighty billion, seven hundred forty million, eight hundred seven thousand, four hundred nine".