80817211 has 2 divisors, whose sum is σ = 80817212. Its totient is φ = 80817210.

The previous prime is 80817179. The next prime is 80817263. The reversal of 80817211 is 11271808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80817211 - 2⁵ = 80817179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80817211.

It is not a weakly prime, because it can be changed into another prime (80817281) 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, 40408605 + 40408606.

It is an arithmetic number, because the mean of its divisors is an integer number (40408606).

Almost surely, 2^80817211 is an apocalyptic number.

80817211 is a deficient number, since it is larger than the sum of its proper divisors (1).

80817211 is an equidigital number, since it uses as much as digits as its factorization.

80817211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 80817211 is about 8989.8393200324. The cubic root of 80817211 is about 432.3491600910.

The spelling of 80817211 in words is "eighty million, eight hundred seventeen thousand, two hundred eleven".