809168799142703 has 4 divisors (see below), whose sum is σ = 809169614776728. Its totient is φ = 809167983508680.

The previous prime is 809168799142681. The next prime is 809168799142727. The reversal of 809168799142703 is 307241997861908.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 809168799142703 - 2³² = 809164504175407 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 (809168799147703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406327088 + ... + 408313653.

It is an arithmetic number, because the mean of its divisors is an integer number (202292403694182).

Almost surely, 2^{809168799142703} is an apocalyptic number.

809168799142703 is a deficient number, since it is larger than the sum of its proper divisors (815634025).

809168799142703 is an equidigital number, since it uses as much as digits as its factorization.

809168799142703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815634024.

The product of its (nonzero) digits is 329204736, while the sum is 74.

The spelling of 809168799142703 in words is "eight hundred nine trillion, one hundred sixty-eight billion, seven hundred ninety-nine million, one hundred forty-two thousand, seven hundred three".