80718811 has 2 divisors, whose sum is σ = 80718812. Its totient is φ = 80718810.

The previous prime is 80718809. The next prime is 80718851. The reversal of 80718811 is 11881708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80718811 - 2¹ = 80718809 is a prime.

Together with 80718809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80718851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40359405 + 40359406.

It is an arithmetic number, because the mean of its divisors is an integer number (40359406).

Almost surely, 2^80718811 is an apocalyptic number.

80718811 is a deficient number, since it is larger than the sum of its proper divisors (1).

80718811 is an equidigital number, since it uses as much as digits as its factorization.

80718811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 34.

The square root of 80718811 is about 8984.3648078203. The cubic root of 80718811 is about 432.1736181290.

The spelling of 80718811 in words is "eighty million, seven hundred eighteen thousand, eight hundred eleven".