268684209727 has 2 divisors, whose sum is σ = 268684209728. Its totient is φ = 268684209726.

The previous prime is 268684209683. The next prime is 268684209793. The reversal of 268684209727 is 727902486862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268684209727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268684203727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134342104863 + 134342104864.

It is an arithmetic number, because the mean of its divisors is an integer number (134342104864).

Almost surely, 2^268684209727 is an apocalyptic number.

268684209727 is a deficient number, since it is larger than the sum of its proper divisors (1).

268684209727 is an equidigital number, since it uses as much as digits as its factorization.

268684209727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 268684209727 in words is "two hundred sixty-eight billion, six hundred eighty-four million, two hundred nine thousand, seven hundred twenty-seven".