18764752856233 has 2 divisors, whose sum is σ = 18764752856234. Its totient is φ = 18764752856232.

The previous prime is 18764752856173. The next prime is 18764752856363. The reversal of 18764752856233 is 33265825746781.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16354518341184 + 2410234515049 = 4044072^2 + 1552493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18764752856233 is a prime.

It is not a weakly prime, because it can be changed into another prime (18764752853233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9382376428116 + 9382376428117.

It is an arithmetic number, because the mean of its divisors is an integer number (9382376428117).

Almost surely, 2^{18764752856233} is an apocalyptic number.

It is an amenable number.

18764752856233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18764752856233 is an equidigital number, since it uses as much as digits as its factorization.

18764752856233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 406425600, while the sum is 67.

The spelling of 18764752856233 in words is "eighteen trillion, seven hundred sixty-four billion, seven hundred fifty-two million, eight hundred fifty-six thousand, two hundred thirty-three".