80809285509 has 12 divisors (see below), whose sum is σ = 116799415200. Its totient is φ = 53838291624.

The previous prime is 80809285483. The next prime is 80809285517. The reversal of 80809285509 is 90558290808.

80809285509 is a `hidden beast` number, since 8 + 0 + 80 + 9 + 2 + 8 + 550 + 9 = 666.

It is not a de Polignac number, because 80809285509 - 2⁸ = 80809285253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80809285709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2865639 + ... + 2893700.

It is an arithmetic number, because the mean of its divisors is an integer number (9733284600).

Almost surely, 2^80809285509 is an apocalyptic number.

It is an amenable number.

80809285509 is a deficient number, since it is larger than the sum of its proper divisors (35990129691).

80809285509 is a wasteful number, since it uses less digits than its factorization.

80809285509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760904 (or 5760901 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 80809285509 in words is "eighty billion, eight hundred nine million, two hundred eighty-five thousand, five hundred nine".