6842232679781 has 2 divisors, whose sum is σ = 6842232679782. Its totient is φ = 6842232679780.

The previous prime is 6842232679741. The next prime is 6842232679787. The reversal of 6842232679781 is 1879762322486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5719109629156 + 1123123050625 = 2391466^2 + 1059775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6842232679781 is a prime.

It is a super-2 number, since 2×6842232679781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6842232679787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3421116339890 + 3421116339891.

It is an arithmetic number, because the mean of its divisors is an integer number (3421116339891).

Almost surely, 2^{6842232679781} is an apocalyptic number.

It is an amenable number.

6842232679781 is a deficient number, since it is larger than the sum of its proper divisors (1).

6842232679781 is an equidigital number, since it uses as much as digits as its factorization.

6842232679781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97542144, while the sum is 65.

The spelling of 6842232679781 in words is "six trillion, eight hundred forty-two billion, two hundred thirty-two million, six hundred seventy-nine thousand, seven hundred eighty-one".