522638438423 has 2 divisors, whose sum is σ = 522638438424. Its totient is φ = 522638438422.

The previous prime is 522638438381. The next prime is 522638438447. The reversal of 522638438423 is 324834836225.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 522638438423 - 2¹⁶ = 522638372887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522638438723) 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, 261319219211 + 261319219212.

It is an arithmetic number, because the mean of its divisors is an integer number (261319219212).

Almost surely, 2^522638438423 is an apocalyptic number.

522638438423 is a deficient number, since it is larger than the sum of its proper divisors (1).

522638438423 is an equidigital number, since it uses as much as digits as its factorization.

522638438423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 50.

The spelling of 522638438423 in words is "five hundred twenty-two billion, six hundred thirty-eight million, four hundred thirty-eight thousand, four hundred twenty-three".