18664962464233 has 2 divisors, whose sum is σ = 18664962464234. Its totient is φ = 18664962464232.

The previous prime is 18664962464207. The next prime is 18664962464311. The reversal of 18664962464233 is 33246426946681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11896208031744 + 6768754432489 = 3449088^2 + 2601683^2 .

It is a cyclic number.

It is not a de Polignac number, because 18664962464233 - 2¹⁷ = 18664962333161 is a prime.

It is not a weakly prime, because it can be changed into another prime (18664962464033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9332481232116 + 9332481232117.

It is an arithmetic number, because the mean of its divisors is an integer number (9332481232117).

Almost surely, 2^{18664962464233} is an apocalyptic number.

It is an amenable number.

18664962464233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18664962464233 is an equidigital number, since it uses as much as digits as its factorization.

18664962464233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214990848, while the sum is 64.

The spelling of 18664962464233 in words is "eighteen trillion, six hundred sixty-four billion, nine hundred sixty-two million, four hundred sixty-four thousand, two hundred thirty-three".