80825398209 has 32 divisors (see below), whose sum is σ = 121588928640. Its totient is φ = 53052981696.

The previous prime is 80825398187. The next prime is 80825398259. The reversal of 80825398209 is 90289352808.

80825398209 is a `hidden beast` number, since 8 + 0 + 82 + 539 + 8 + 20 + 9 = 666.

It is not a de Polignac number, because 80825398209 - 2⁷ = 80825398081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80825398259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4036747 + ... + 4056719.

It is an arithmetic number, because the mean of its divisors is an integer number (3799654020).

Almost surely, 2^80825398209 is an apocalyptic number.

It is an amenable number.

80825398209 is a deficient number, since it is larger than the sum of its proper divisors (40763530431).

80825398209 is a wasteful number, since it uses less digits than its factorization.

80825398209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22286 (or 22280 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 80825398209 in words is "eighty billion, eight hundred twenty-five million, three hundred ninety-eight thousand, two hundred nine".