18664962464311 has 2 divisors, whose sum is σ = 18664962464312. Its totient is φ = 18664962464310.

The previous prime is 18664962464233. The next prime is 18664962464341. The reversal of 18664962464311 is 11346426946681.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18664962464311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18664962464311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18664962464341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9332481232155 + 9332481232156.

It is an arithmetic number, because the mean of its divisors is an integer number (9332481232156).

Almost surely, 2^{18664962464311} is an apocalyptic number.

18664962464311 is a deficient number, since it is larger than the sum of its proper divisors (1).

18664962464311 is an equidigital number, since it uses as much as digits as its factorization.

18664962464311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35831808, while the sum is 61.

The spelling of 18664962464311 in words is "eighteen trillion, six hundred sixty-four billion, nine hundred sixty-two million, four hundred sixty-four thousand, three hundred eleven".