68086646268647 has 2 divisors, whose sum is σ = 68086646268648. Its totient is φ = 68086646268646.

The previous prime is 68086646268637. The next prime is 68086646268653. The reversal of 68086646268647 is 74686264668086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68086646268647 - 2¹⁴ = 68086646252263 is a prime.

It is a super-2 number, since 2×68086646268647² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68086646268637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34043323134323 + 34043323134324.

It is an arithmetic number, because the mean of its divisors is an integer number (34043323134324).

Almost surely, 2^{68086646268647} is an apocalyptic number.

68086646268647 is a deficient number, since it is larger than the sum of its proper divisors (1).

68086646268647 is an equidigital number, since it uses as much as digits as its factorization.

68086646268647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5350883328, while the sum is 77.

The spelling of 68086646268647 in words is "sixty-eight trillion, eighty-six billion, six hundred forty-six million, two hundred sixty-eight thousand, six hundred forty-seven".