6542223343837 has 2 divisors, whose sum is σ = 6542223343838. Its totient is φ = 6542223343836.

The previous prime is 6542223343829. The next prime is 6542223343891. The reversal of 6542223343837 is 7383433222456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4668771418756 + 1873451925081 = 2160734^2 + 1368741^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542223343837 - 2³ = 6542223343829 is a prime.

It is a super-3 number, since 3×6542223343837³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6542223343937) 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, 3271111671918 + 3271111671919.

It is an arithmetic number, because the mean of its divisors is an integer number (3271111671919).

Almost surely, 2^{6542223343837} is an apocalyptic number.

It is an amenable number.

6542223343837 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542223343837 is an equidigital number, since it uses as much as digits as its factorization.

6542223343837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 52.

The spelling of 6542223343837 in words is "six trillion, five hundred forty-two billion, two hundred twenty-three million, three hundred forty-three thousand, eight hundred thirty-seven".