163799239543 has 2 divisors, whose sum is σ = 163799239544. Its totient is φ = 163799239542.

The previous prime is 163799239481. The next prime is 163799239559. The reversal of 163799239543 is 345932997361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163799239543 - 2³³ = 155209304951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163799239573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81899619771 + 81899619772.

It is an arithmetic number, because the mean of its divisors is an integer number (81899619772).

Almost surely, 2^163799239543 is an apocalyptic number.

163799239543 is a deficient number, since it is larger than the sum of its proper divisors (1).

163799239543 is an equidigital number, since it uses as much as digits as its factorization.

163799239543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33067440, while the sum is 61.

The spelling of 163799239543 in words is "one hundred sixty-three billion, seven hundred ninety-nine million, two hundred thirty-nine thousand, five hundred forty-three".