68086646268637 has 2 divisors, whose sum is σ = 68086646268638. Its totient is φ = 68086646268636.

The previous prime is 68086646268499. The next prime is 68086646268647. The reversal of 68086646268637 is 73686264668086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35107686930276 + 32978959338361 = 5925174^2 + 5742731^2 .

It is a cyclic number.

It is not a de Polignac number, because 68086646268637 - 2⁴³ = 59290553246429 is a prime.

It is a super-2 number, since 2×68086646268637² (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 (68086646268647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34043323134318 + 34043323134319.

It is an arithmetic number, because the mean of its divisors is an integer number (34043323134319).

Almost surely, 2^{68086646268637} is an apocalyptic number.

It is an amenable number.

68086646268637 is a deficient number, since it is larger than the sum of its proper divisors (1).

68086646268637 is an equidigital number, since it uses as much as digits as its factorization.

68086646268637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4013162496, while the sum is 76.

The spelling of 68086646268637 in words is "sixty-eight trillion, eighty-six billion, six hundred forty-six million, two hundred sixty-eight thousand, six hundred thirty-seven".