201500571165 has 16 divisors (see below), whose sum is σ = 329260508928. Its totient is φ = 105180439616.

The previous prime is 201500571163. The next prime is 201500571179. The reversal of 201500571165 is 561175005102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201500571165 - 2¹ = 201500571163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201500571163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142907502 + ... + 142908911.

It is an arithmetic number, because the mean of its divisors is an integer number (20578781808).

Almost surely, 2^201500571165 is an apocalyptic number.

It is an amenable number.

201500571165 is a deficient number, since it is larger than the sum of its proper divisors (127759937763).

201500571165 is a wasteful number, since it uses less digits than its factorization.

201500571165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285816468.

The product of its (nonzero) digits is 10500, while the sum is 33.

Adding to 201500571165 its reverse (561175005102), we get a palindrome (762675576267).

The spelling of 201500571165 in words is "two hundred one billion, five hundred million, five hundred seventy-one thousand, one hundred sixty-five".