80111109 has 8 divisors (see below), whose sum is σ = 115031392. Its totient is φ = 49299120.

The previous prime is 80111071. The next prime is 80111111. The reversal of 80111109 is 90111108.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80111109 - 2¹⁶ = 80045573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80111309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027027 + ... + 1027104.

It is an arithmetic number, because the mean of its divisors is an integer number (14378924).

Almost surely, 2^80111109 is an apocalyptic number.

It is an amenable number.

80111109 is a deficient number, since it is larger than the sum of its proper divisors (34920283).

80111109 is a wasteful number, since it uses less digits than its factorization.

80111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054147.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 80111109 is about 8950.4809367989. The cubic root of 80111109 is about 431.0863266304.

Subtracting 80111109 from its reverse (90111108), we obtain a palindrome (9999999).

The spelling of 80111109 in words is "eighty million, one hundred eleven thousand, one hundred nine".