165630230201 has 2 divisors, whose sum is σ = 165630230202. Its totient is φ = 165630230200.

The previous prime is 165630230149. The next prime is 165630230209. The reversal of 165630230201 is 102032036561.

165630230201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165629464576 + 765625 = 406976^2 + 875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165630230201 is a prime.

It is not a weakly prime, because it can be changed into another prime (165630230209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82815115100 + 82815115101.

It is an arithmetic number, because the mean of its divisors is an integer number (82815115101).

Almost surely, 2^165630230201 is an apocalyptic number.

It is an amenable number.

165630230201 is a deficient number, since it is larger than the sum of its proper divisors (1).

165630230201 is an equidigital number, since it uses as much as digits as its factorization.

165630230201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 165630230201 its reverse (102032036561), we get a palindrome (267662266762).

The spelling of 165630230201 in words is "one hundred sixty-five billion, six hundred thirty million, two hundred thirty thousand, two hundred one".