68552442697 has 2 divisors, whose sum is σ = 68552442698. Its totient is φ = 68552442696.

The previous prime is 68552442691. The next prime is 68552442769. The reversal of 68552442697 is 79624425586.

It is a happy number.

Together with next prime (68552442769) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48134604816 + 20417837881 = 219396^2 + 142891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68552442697 is a prime.

It is not a weakly prime, because it can be changed into another prime (68552442691) 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, 34276221348 + 34276221349.

It is an arithmetic number, because the mean of its divisors is an integer number (34276221349).

Almost surely, 2^68552442697 is an apocalyptic number.

It is an amenable number.

68552442697 is a deficient number, since it is larger than the sum of its proper divisors (1).

68552442697 is an equidigital number, since it uses as much as digits as its factorization.

68552442697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 58.

The spelling of 68552442697 in words is "sixty-eight billion, five hundred fifty-two million, four hundred forty-two thousand, six hundred ninety-seven".