80108811 has 64 divisors (see below), whose sum is σ = 132969600. Its totient is φ = 47443968.

The previous prime is 80108801. The next prime is 80108827. The reversal of 80108811 is 11880108.

It is not a de Polignac number, because 80108811 - 2²² = 75914507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

80108811 is a modest number, since divided by 8811 gives 8010 as remainder.

It is not an unprimeable number, because it can be changed into a prime (80108801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 900055 + ... + 900143.

It is an arithmetic number, because the mean of its divisors is an integer number (2077650).

Almost surely, 2^80108811 is an apocalyptic number.

80108811 is the 5661-st heptagonal number.

80108811 is a deficient number, since it is larger than the sum of its proper divisors (52860789).

80108811 is a wasteful number, since it uses less digits than its factorization.

80108811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The square root of 80108811 is about 8950.3525628882. The cubic root of 80108811 is about 431.0822046642.

Adding to 80108811 its reverse (11880108), we get a palindrome (91988919).

The spelling of 80108811 in words is "eighty million, one hundred eight thousand, eight hundred eleven".