20238229186543 has 2 divisors, whose sum is σ = 20238229186544. Its totient is φ = 20238229186542.

The previous prime is 20238229186541. The next prime is 20238229186631. The reversal of 20238229186543 is 34568192283202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20238229186543 - 2¹ = 20238229186541 is a prime.

Together with 20238229186541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20238229186541) 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 as a sum of consecutive naturals, namely, 10119114593271 + 10119114593272.

It is an arithmetic number, because the mean of its divisors is an integer number (10119114593272).

Almost surely, 2^{20238229186543} is an apocalyptic number.

20238229186543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20238229186543 is an equidigital number, since it uses as much as digits as its factorization.

20238229186543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 20238229186543 in words is "twenty trillion, two hundred thirty-eight billion, two hundred twenty-nine million, one hundred eighty-six thousand, five hundred forty-three".