201540226443163 has 4 divisors (see below), whose sum is σ = 201542585075928. Its totient is φ = 201537867810400.

The previous prime is 201540226443151. The next prime is 201540226443167. The reversal of 201540226443163 is 361344622045102.

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

It is a cyclic number.

It is not a de Polignac number, because 201540226443163 - 2¹³ = 201540226434971 is a prime.

It is a super-2 number, since 2×201540226443163² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201540226443167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179188206 + ... + 1179359107.

It is an arithmetic number, because the mean of its divisors is an integer number (50385646268982).

Almost surely, 2^{201540226443163} is an apocalyptic number.

201540226443163 is a deficient number, since it is larger than the sum of its proper divisors (2358632765).

201540226443163 is an equidigital number, since it uses as much as digits as its factorization.

201540226443163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358632764.

The product of its (nonzero) digits is 829440, while the sum is 43.

Adding to 201540226443163 its reverse (361344622045102), we get a palindrome (562884848488265).

The spelling of 201540226443163 in words is "two hundred one trillion, five hundred forty billion, two hundred twenty-six million, four hundred forty-three thousand, one hundred sixty-three".