18111883456769 has 2 divisors, whose sum is σ = 18111883456770. Its totient is φ = 18111883456768.

The previous prime is 18111883456721. The next prime is 18111883456811. The reversal of 18111883456769 is 96765438811181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17069391406144 + 1042492050625 = 4131512^2 + 1021025^2 .

It is a cyclic number.

It is not a de Polignac number, because 18111883456769 - 2²⁴ = 18111866679553 is a prime.

It is a super-2 number, since 2×18111883456769² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18111883456699 and 18111883456708.

It is not a weakly prime, because it can be changed into another prime (18111883456169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9055941728384 + 9055941728385.

It is an arithmetic number, because the mean of its divisors is an integer number (9055941728385).

Almost surely, 2^{18111883456769} is an apocalyptic number.

It is an amenable number.

18111883456769 is a deficient number, since it is larger than the sum of its proper divisors (1).

18111883456769 is an equidigital number, since it uses as much as digits as its factorization.

18111883456769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69672960, while the sum is 68.

The spelling of 18111883456769 in words is "eighteen trillion, one hundred eleven billion, eight hundred eighty-three million, four hundred fifty-six thousand, seven hundred sixty-nine".