6542866339 has 2 divisors, whose sum is σ = 6542866340. Its totient is φ = 6542866338.

The previous prime is 6542866333. The next prime is 6542866357. The reversal of 6542866339 is 9336682456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6542866339 - 2³ = 6542866331 is a prime.

It is not a weakly prime, because it can be changed into another prime (6542866331) 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, 3271433169 + 3271433170.

It is an arithmetic number, because the mean of its divisors is an integer number (3271433170).

Almost surely, 2^6542866339 is an apocalyptic number.

6542866339 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542866339 is an equidigital number, since it uses as much as digits as its factorization.

6542866339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 52.

The square root of 6542866339 is about 80887.9863700414. The cubic root of 6542866339 is about 1870.3491335307.

The spelling of 6542866339 in words is "six billion, five hundred forty-two million, eight hundred sixty-six thousand, three hundred thirty-nine".