165688930163 has 2 divisors, whose sum is σ = 165688930164. Its totient is φ = 165688930162.

The previous prime is 165688930153. The next prime is 165688930181. The reversal of 165688930163 is 361039886561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165688930163 - 2¹⁰ = 165688929139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165688930099 and 165688930108.

It is not a weakly prime, because it can be changed into another prime (165688930103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82844465081 + 82844465082.

It is an arithmetic number, because the mean of its divisors is an integer number (82844465082).

Almost surely, 2^165688930163 is an apocalyptic number.

165688930163 is a deficient number, since it is larger than the sum of its proper divisors (1).

165688930163 is an equidigital number, since it uses as much as digits as its factorization.

165688930163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 165688930163 in words is "one hundred sixty-five billion, six hundred eighty-eight million, nine hundred thirty thousand, one hundred sixty-three".