68850858289 has 2 divisors, whose sum is σ = 68850858290. Its totient is φ = 68850858288.

The previous prime is 68850858281. The next prime is 68850858331. The reversal of 68850858289 is 98285805886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37303059600 + 31547798689 = 193140^2 + 177617^2 .

It is a cyclic number.

It is not a de Polignac number, because 68850858289 - 2³ = 68850858281 is a prime.

It is not a weakly prime, because it can be changed into another prime (68850858281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34425429144 + 34425429145.

It is an arithmetic number, because the mean of its divisors is an integer number (34425429145).

Almost surely, 2^68850858289 is an apocalyptic number.

It is an amenable number.

68850858289 is a deficient number, since it is larger than the sum of its proper divisors (1).

68850858289 is an equidigital number, since it uses as much as digits as its factorization.

68850858289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88473600, while the sum is 67.

The spelling of 68850858289 in words is "sixty-eight billion, eight hundred fifty million, eight hundred fifty-eight thousand, two hundred eighty-nine".