6918162137773 has 2 divisors, whose sum is σ = 6918162137774. Its totient is φ = 6918162137772.

The previous prime is 6918162137771. The next prime is 6918162137819. The reversal of 6918162137773 is 3777312618196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6707799563364 + 210362574409 = 2589942^2 + 458653^2 .

It is a cyclic number.

It is not a de Polignac number, because 6918162137773 - 2¹ = 6918162137771 is a prime.

Together with 6918162137771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6918162137771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3459081068886 + 3459081068887.

It is an arithmetic number, because the mean of its divisors is an integer number (3459081068887).

Almost surely, 2^{6918162137773} is an apocalyptic number.

It is an amenable number.

6918162137773 is a deficient number, since it is larger than the sum of its proper divisors (1).

6918162137773 is an equidigital number, since it uses as much as digits as its factorization.

6918162137773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16003008, while the sum is 61.

The spelling of 6918162137773 in words is "six trillion, nine hundred eighteen billion, one hundred sixty-two million, one hundred thirty-seven thousand, seven hundred seventy-three".