80565011 has 2 divisors, whose sum is σ = 80565012. Its totient is φ = 80565010.

The previous prime is 80564983. The next prime is 80565013. The reversal of 80565011 is 11056508.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80565011 is a prime.

It is a Sophie Germain prime.

Together with 80565013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80565013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40282505 + 40282506.

It is an arithmetic number, because the mean of its divisors is an integer number (40282506).

Almost surely, 2^80565011 is an apocalyptic number.

80565011 is a deficient number, since it is larger than the sum of its proper divisors (1).

80565011 is an equidigital number, since it uses as much as digits as its factorization.

80565011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 80565011 is about 8975.8014126873. The cubic root of 80565011 is about 431.8989586364.

The spelling of 80565011 in words is "eighty million, five hundred sixty-five thousand, eleven".