163743809806 has 8 divisors (see below), whose sum is σ = 246148505064. Its totient is φ = 81694308120.

The previous prime is 163743809791. The next prime is 163743809813. The reversal of 163743809806 is 608908347361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88797240 + ... + 88799083.

It is an arithmetic number, because the mean of its divisors is an integer number (30768563133).

Almost surely, 2^163743809806 is an apocalyptic number.

163743809806 is a deficient number, since it is larger than the sum of its proper divisors (82404695258).

163743809806 is a wasteful number, since it uses less digits than its factorization.

163743809806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177596786.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 163743809806 in words is "one hundred sixty-three billion, seven hundred forty-three million, eight hundred nine thousand, eight hundred six".