201643643113 has 16 divisors (see below), whose sum is σ = 225619520256. Its totient is φ = 178642023040.

The previous prime is 201643643093. The next prime is 201643643167. The reversal of 201643643113 is 311346346102.

It is a cyclic number.

It is not a de Polignac number, because 201643643113 - 2²⁹ = 201106772201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201643640113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716506 + ... + 957427.

It is an arithmetic number, because the mean of its divisors is an integer number (14101220016).

Almost surely, 2^201643643113 is an apocalyptic number.

It is an amenable number.

201643643113 is a deficient number, since it is larger than the sum of its proper divisors (23975877143).

201643643113 is a wasteful number, since it uses less digits than its factorization.

201643643113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674224.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 201643643113 its reverse (311346346102), we get a palindrome (512989989215).

The spelling of 201643643113 in words is "two hundred one billion, six hundred forty-three million, six hundred forty-three thousand, one hundred thirteen".