809322473913 has 4 divisors (see below), whose sum is σ = 1079096631888. Its totient is φ = 539548315940.

The previous prime is 809322473867. The next prime is 809322473917. The reversal of 809322473913 is 319374223908.

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 not a de Polignac number, because 809322473913 - 2²⁰ = 809321425337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (809322473917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134887078983 + ... + 134887078988.

It is an arithmetic number, because the mean of its divisors is an integer number (269774157972).

Almost surely, 2^809322473913 is an apocalyptic number.

It is an amenable number.

809322473913 is a deficient number, since it is larger than the sum of its proper divisors (269774157975).

809322473913 is a wasteful number, since it uses less digits than its factorization.

809322473913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269774157974.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 809322473913 in words is "eight hundred nine billion, three hundred twenty-two million, four hundred seventy-three thousand, nine hundred thirteen".