202123063543 has 4 divisors (see below), whose sum is σ = 202123999000. Its totient is φ = 202122128088.

The previous prime is 202123063517. The next prime is 202123063547. The reversal of 202123063543 is 345360321202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202123063543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202123063547) 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 3 ways as a sum of consecutive naturals, for example, 40333 + ... + 637081.

It is an arithmetic number, because the mean of its divisors is an integer number (50530999750).

Almost surely, 2^202123063543 is an apocalyptic number.

202123063543 is a deficient number, since it is larger than the sum of its proper divisors (935457).

202123063543 is an equidigital number, since it uses as much as digits as its factorization.

202123063543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935456.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 202123063543 its reverse (345360321202), we get a palindrome (547483384745).

The spelling of 202123063543 in words is "two hundred two billion, one hundred twenty-three million, sixty-three thousand, five hundred forty-three".