201020433054423 has 4 divisors (see below), whose sum is σ = 268027244072568. Its totient is φ = 134013622036280.

The previous prime is 201020433054391. The next prime is 201020433054437. The reversal of 201020433054423 is 324450334020102.

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 201020433054423 - 2⁵ = 201020433054391 is a prime.

It is a super-3 number, since 3×201020433054423³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020433054223) 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, 33503405509068 + ... + 33503405509073.

It is an arithmetic number, because the mean of its divisors is an integer number (67006811018142).

Almost surely, 2^{201020433054423} is an apocalyptic number.

201020433054423 is a deficient number, since it is larger than the sum of its proper divisors (67006811018145).

201020433054423 is an equidigital number, since it uses as much as digits as its factorization.

201020433054423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67006811018144.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 201020433054423 its reverse (324450334020102), we get a palindrome (525470767074525).

The spelling of 201020433054423 in words is "two hundred one trillion, twenty billion, four hundred thirty-three million, fifty-four thousand, four hundred twenty-three".