18552168688793 has 2 divisors, whose sum is σ = 18552168688794. Its totient is φ = 18552168688792.

The previous prime is 18552168688783. The next prime is 18552168688871. The reversal of 18552168688793 is 39788686125581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16403050804624 + 2149117884169 = 4050068^2 + 1465987^2 .

It is a cyclic number.

It is not a de Polignac number, because 18552168688793 - 2²⁴ = 18552151911577 is a prime.

It is not a weakly prime, because it can be changed into another prime (18552168688783) 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, 9276084344396 + 9276084344397.

It is an arithmetic number, because the mean of its divisors is an integer number (9276084344397).

Almost surely, 2^{18552168688793} is an apocalyptic number.

It is an amenable number.

18552168688793 is a deficient number, since it is larger than the sum of its proper divisors (1).

18552168688793 is an equidigital number, since it uses as much as digits as its factorization.

18552168688793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1393459200, while the sum is 77.

The spelling of 18552168688793 in words is "eighteen trillion, five hundred fifty-two billion, one hundred sixty-eight million, six hundred eighty-eight thousand, seven hundred ninety-three".