80855011 has 2 divisors, whose sum is σ = 80855012. Its totient is φ = 80855010.

The previous prime is 80854981. The next prime is 80855039. The reversal of 80855011 is 11055808.

It is an a-pointer prime, because the next prime (80855039) can be obtained adding 80855011 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80855011 - 2⁷ = 80854883 is a prime.

It is not a weakly prime, because it can be changed into another prime (80855041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40427505 + 40427506.

It is an arithmetic number, because the mean of its divisors is an integer number (40427506).

Almost surely, 2^80855011 is an apocalyptic number.

80855011 is a deficient number, since it is larger than the sum of its proper divisors (1).

80855011 is an equidigital number, since it uses as much as digits as its factorization.

80855011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 80855011 is about 8991.9414477631. The cubic root of 80855011 is about 432.4165560114.

The spelling of 80855011 in words is "eighty million, eight hundred fifty-five thousand, eleven".