68063605289 has 4 divisors (see below), whose sum is σ = 68093551956. Its totient is φ = 68033658624.

The previous prime is 68063605273. The next prime is 68063605297. The reversal of 68063605289 is 98250636086.

68063605289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65174005264 + 2889600025 = 255292^2 + 53755^2 .

It is a cyclic number.

It is not a de Polignac number, because 68063605289 - 2⁴ = 68063605273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68063605289.

It is not an unprimeable number, because it can be changed into a prime (68063608289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14969924 + ... + 14974469.

It is an arithmetic number, because the mean of its divisors is an integer number (17023387989).

Almost surely, 2^68063605289 is an apocalyptic number.

It is an amenable number.

68063605289 is a deficient number, since it is larger than the sum of its proper divisors (29946667).

68063605289 is a wasteful number, since it uses less digits than its factorization.

68063605289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29946666.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 68063605289 in words is "sixty-eight billion, sixty-three million, six hundred five thousand, two hundred eighty-nine".