809673832213 has 4 divisors (see below), whose sum is σ = 810024191008. Its totient is φ = 809323473420.

The previous prime is 809673832183. The next prime is 809673832223. The reversal of 809673832213 is 312238376908.

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 809673832213 - 2²⁹ = 809136961301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809673832223) 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, 175175931 + ... + 175180552.

It is an arithmetic number, because the mean of its divisors is an integer number (202506047752).

Almost surely, 2^809673832213 is an apocalyptic number.

It is an amenable number.

809673832213 is a deficient number, since it is larger than the sum of its proper divisors (350358795).

809673832213 is a wasteful number, since it uses less digits than its factorization.

809673832213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350358794.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 809673832213 in words is "eight hundred nine billion, six hundred seventy-three million, eight hundred thirty-two thousand, two hundred thirteen".