80712811 has 2 divisors, whose sum is σ = 80712812. Its totient is φ = 80712810.

The previous prime is 80712803. The next prime is 80712851. The reversal of 80712811 is 11821708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80712811 - 2³ = 80712803 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80712811.

It is not a weakly prime, because it can be changed into another prime (80712851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40356405 + 40356406.

It is an arithmetic number, because the mean of its divisors is an integer number (40356406).

Almost surely, 2^80712811 is an apocalyptic number.

80712811 is a deficient number, since it is larger than the sum of its proper divisors (1).

80712811 is an equidigital number, since it uses as much as digits as its factorization.

80712811 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 80712811 is about 8984.0308881927. The cubic root of 80712811 is about 432.1629097372.

The spelling of 80712811 in words is "eighty million, seven hundred twelve thousand, eight hundred eleven".