82094013409 has 4 divisors (see below), whose sum is σ = 82356294916. Its totient is φ = 81831731904.

The previous prime is 82094013401. The next prime is 82094013437. The reversal of 82094013409 is 90431049028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30532320225 + 51561693184 = 174735^2 + 227072^2 .

It is a cyclic number.

It is not a de Polignac number, because 82094013409 - 2³ = 82094013401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82094013401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131140284 + ... + 131140909.

It is an arithmetic number, because the mean of its divisors is an integer number (20589073729).

Almost surely, 2^82094013409 is an apocalyptic number.

It is an amenable number.

82094013409 is a deficient number, since it is larger than the sum of its proper divisors (262281507).

82094013409 is a wasteful number, since it uses less digits than its factorization.

82094013409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262281506.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 82094013409 in words is "eighty-two billion, ninety-four million, thirteen thousand, four hundred nine".