163943307543 has 8 divisors (see below), whose sum is σ = 218656166400. Its totient is φ = 109262993528.

The previous prime is 163943307523. The next prime is 163943307547. The reversal of 163943307543 is 345703349361.

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

It is a cyclic number.

It is not a de Polignac number, because 163943307543 - 2⁸ = 163943307287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163943307492 and 163943307501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163943307547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8124453 + ... + 8144606.

It is an arithmetic number, because the mean of its divisors is an integer number (27332020800).

Almost surely, 2^163943307543 is an apocalyptic number.

163943307543 is a deficient number, since it is larger than the sum of its proper divisors (54712858857).

163943307543 is a wasteful number, since it uses less digits than its factorization.

163943307543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16272421.

The product of its (nonzero) digits is 2449440, while the sum is 48.

The spelling of 163943307543 in words is "one hundred sixty-three billion, nine hundred forty-three million, three hundred seven thousand, five hundred forty-three".