201010004165 has 4 divisors (see below), whose sum is σ = 241212005004. Its totient is φ = 160808003328.

The previous prime is 201010004159. The next prime is 201010004257. The reversal of 201010004165 is 561400010102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86567173729 + 114442830436 = 294223^2 + 338294^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010004165 - 2¹⁰ = 201010003141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20101000412 + ... + 20101000421.

It is an arithmetic number, because the mean of its divisors is an integer number (60303001251).

Almost surely, 2^201010004165 is an apocalyptic number.

It is an amenable number.

201010004165 is a deficient number, since it is larger than the sum of its proper divisors (40202000839).

201010004165 is an equidigital number, since it uses as much as digits as its factorization.

201010004165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40202000838.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 201010004165 its reverse (561400010102), we get a palindrome (762410014267).

The spelling of 201010004165 in words is "two hundred one billion, ten million, four thousand, one hundred sixty-five".