808112081 has 4 divisors (see below), whose sum is σ = 923556672. Its totient is φ = 692667492.

The previous prime is 808112069. The next prime is 808112087. The reversal of 808112081 is 180211808.

808112081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808112081 is a prime.

It is a super-2 number, since 2×808112081² = 1306090270916301122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808112087) 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, 57722285 + ... + 57722298.

It is an arithmetic number, because the mean of its divisors is an integer number (230889168).

Almost surely, 2^808112081 is an apocalyptic number.

It is an amenable number.

808112081 is a deficient number, since it is larger than the sum of its proper divisors (115444591).

808112081 is a wasteful number, since it uses less digits than its factorization.

808112081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115444590.

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 808112081 is about 28427.3122366502. The cubic root of 808112081 is about 931.4449657646. Note that the first 3 decimals are identical.

Adding to 808112081 its reverse (180211808), we get a palindrome (988323889).

The spelling of 808112081 in words is "eight hundred eight million, one hundred twelve thousand, eighty-one".