82323512209 has 4 divisors (see below), whose sum is σ = 82737198400. Its totient is φ = 81909826020.

The previous prime is 82323512147. The next prime is 82323512261. The reversal of 82323512209 is 90221532328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82323512209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82323512269) 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 3 ways as a sum of consecutive naturals, for example, 206842797 + ... + 206843194.

It is an arithmetic number, because the mean of its divisors is an integer number (20684299600).

Almost surely, 2^82323512209 is an apocalyptic number.

It is an amenable number.

82323512209 is a deficient number, since it is larger than the sum of its proper divisors (413686191).

82323512209 is a wasteful number, since it uses less digits than its factorization.

82323512209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413686190.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 82323512209 in words is "eighty-two billion, three hundred twenty-three million, five hundred twelve thousand, two hundred nine".