80811011 has 4 divisors (see below), whose sum is σ = 80829024. Its totient is φ = 80793000.

The previous prime is 80810987. The next prime is 80811037. The reversal of 80811011 is 11011808.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 80811011 - 2¹⁰ = 80809987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80811091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3686 + ... + 13236.

It is an arithmetic number, because the mean of its divisors is an integer number (20207256).

Almost surely, 2^80811011 is an apocalyptic number.

80811011 is a deficient number, since it is larger than the sum of its proper divisors (18013).

80811011 is an equidigital number, since it uses as much as digits as its factorization.

80811011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18012.

The product of its (nonzero) digits is 64, while the sum is 20.

The square root of 80811011 is about 8989.4944796690. The cubic root of 80811011 is about 432.3381037277.

Adding to 80811011 its reverse (11011808), we get a palindrome (91822819).

The spelling of 80811011 in words is "eighty million, eight hundred eleven thousand, eleven".