80316569 has 2 divisors, whose sum is σ = 80316570. Its totient is φ = 80316568.

The previous prime is 80316559. The next prime is 80316583. The reversal of 80316569 is 96561308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80281600 + 34969 = 8960^2 + 187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80316569 is a prime.

It is a super-2 number, since 2×80316569² = 12901502511863522, which contains 22 as substring.

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 (80316559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40158284 + 40158285.

It is an arithmetic number, because the mean of its divisors is an integer number (40158285).

Almost surely, 2^80316569 is an apocalyptic number.

It is an amenable number.

80316569 is a deficient number, since it is larger than the sum of its proper divisors (1).

80316569 is an equidigital number, since it uses as much as digits as its factorization.

80316569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 80316569 is about 8961.9511826387. The cubic root of 80316569 is about 431.4545459967.

The spelling of 80316569 in words is "eighty million, three hundred sixteen thousand, five hundred sixty-nine".