80117091 has 18 divisors (see below), whose sum is σ = 122140980. Its totient is φ = 50598216.

The previous prime is 80117087. The next prime is 80117117. The reversal of 80117091 is 19071108.

It is not a de Polignac number, because 80117091 - 2² = 80117087 is a prime.

It is a super-3 number, since 3×80117091³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80117491) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9081 + ... + 15578.

It is an arithmetic number, because the mean of its divisors is an integer number (6785610).

Almost surely, 2^80117091 is an apocalyptic number.

80117091 is a deficient number, since it is larger than the sum of its proper divisors (42023889).

80117091 is a wasteful number, since it uses less digits than its factorization.

80117091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24703 (or 24681 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 80117091 is about 8950.8151025479. The cubic root of 80117091 is about 431.0970562876.

Adding to 80117091 its reverse (19071108), we get a palindrome (99188199).

The spelling of 80117091 in words is "eighty million, one hundred seventeen thousand, ninety-one".