165143345510203 has 2 divisors, whose sum is σ = 165143345510204. Its totient is φ = 165143345510202.

The previous prime is 165143345510183. The next prime is 165143345510237. The reversal of 165143345510203 is 302015543341561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165143345510203 - 2²¹ = 165143343413051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165143345510203.

It is not a weakly prime, because it can be changed into another prime (165143345510263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82571672755101 + 82571672755102.

It is an arithmetic number, because the mean of its divisors is an integer number (82571672755102).

Almost surely, 2^{165143345510203} is an apocalyptic number.

165143345510203 is a deficient number, since it is larger than the sum of its proper divisors (1).

165143345510203 is an equidigital number, since it uses as much as digits as its factorization.

165143345510203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 43.

Adding to 165143345510203 its reverse (302015543341561), we get a palindrome (467158888851764).

The spelling of 165143345510203 in words is "one hundred sixty-five trillion, one hundred forty-three billion, three hundred forty-five million, five hundred ten thousand, two hundred three".