68759852857 has 2 divisors, whose sum is σ = 68759852858. Its totient is φ = 68759852856.

The previous prime is 68759852851. The next prime is 68759852869. The reversal of 68759852857 is 75825895786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68759852841 + 16 = 262221^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 68759852857 - 2⁷ = 68759852729 is a prime.

It is not a weakly prime, because it can be changed into another prime (68759852851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34379926428 + 34379926429.

It is an arithmetic number, because the mean of its divisors is an integer number (34379926429).

Almost surely, 2^68759852857 is an apocalyptic number.

It is an amenable number.

68759852857 is a deficient number, since it is larger than the sum of its proper divisors (1).

68759852857 is an equidigital number, since it uses as much as digits as its factorization.

68759852857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688000, while the sum is 70.

The spelling of 68759852857 in words is "sixty-eight billion, seven hundred fifty-nine million, eight hundred fifty-two thousand, eight hundred fifty-seven".