867543216373 has 2 divisors, whose sum is σ = 867543216374. Its totient is φ = 867543216372.

The previous prime is 867543216359. The next prime is 867543216437. The reversal of 867543216373 is 373612345768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864559653489 + 2983562884 = 929817^2 + 54622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-867543216373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (867543216473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433771608186 + 433771608187.

It is an arithmetic number, because the mean of its divisors is an integer number (433771608187).

Almost surely, 2^867543216373 is an apocalyptic number.

It is an amenable number.

867543216373 is a deficient number, since it is larger than the sum of its proper divisors (1).

867543216373 is an equidigital number, since it uses as much as digits as its factorization.

867543216373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 55.

The spelling of 867543216373 in words is "eight hundred sixty-seven billion, five hundred forty-three million, two hundred sixteen thousand, three hundred seventy-three".