538517332702123 has 2 divisors, whose sum is σ = 538517332702124. Its totient is φ = 538517332702122.

The previous prime is 538517332702051. The next prime is 538517332702127. The reversal of 538517332702123 is 321207233715835.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538517332702123 - 2³³ = 538508742767531 is a prime.

It is not a weakly prime, because it can be changed into another prime (538517332702127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269258666351061 + 269258666351062.

It is an arithmetic number, because the mean of its divisors is an integer number (269258666351062).

Almost surely, 2^{538517332702123} is an apocalyptic number.

538517332702123 is a deficient number, since it is larger than the sum of its proper divisors (1).

538517332702123 is an equidigital number, since it uses as much as digits as its factorization.

538517332702123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 538517332702123 in words is "five hundred thirty-eight trillion, five hundred seventeen billion, three hundred thirty-two million, seven hundred two thousand, one hundred twenty-three".