163743809856 has 224 divisors, whose sum is σ = 485963366400. Its totient is φ = 48233318400.

The previous prime is 163743809851. The next prime is 163743809861. The reversal of 163743809856 is 658908347361.

It is an interprime number because it is at equal distance from previous prime (163743809851) and next prime (163743809861).

It is a self number, because there is not a number n which added to its sum of digits gives 163743809856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163743809851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14784801 + ... + 14795871.

Almost surely, 2^163743809856 is an apocalyptic number.

163743809856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163743809856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242981683200).

163743809856 is an abundant number, since it is smaller than the sum of its proper divisors (322219556544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163743809856 is a wasteful number, since it uses less digits than its factorization.

163743809856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11293 (or 11283 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 163743809856 in words is "one hundred sixty-three billion, seven hundred forty-three million, eight hundred nine thousand, eight hundred fifty-six".