80109871 has 18 divisors (see below), whose sum is σ = 87264240. Its totient is φ = 73519056.

The previous prime is 80109863. The next prime is 80109893. The reversal of 80109871 is 17890108.

It is not a de Polignac number, because 80109871 - 2³ = 80109863 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80109811) 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 17 ways as a sum of consecutive naturals, for example, 1014010 + ... + 1014088.

Almost surely, 2^80109871 is an apocalyptic number.

80109871 is a deficient number, since it is larger than the sum of its proper divisors (7154369).

80109871 is an equidigital number, since it uses as much as digits as its factorization.

80109871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 80109871 is about 8950.4117782368. The cubic root of 80109871 is about 431.0841060161.

Adding to 80109871 its reverse (17890108), we get a palindrome (97999979).

The spelling of 80109871 in words is "eighty million, one hundred nine thousand, eight hundred seventy-one".