68985322568 has 12 divisors (see below), whose sum is σ = 129348872745. Its totient is φ = 34492289840.

The previous prime is 68985322541. The next prime is 68985322577. The reversal of 68985322568 is 86522358986.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 47322781444 + 21662541124 = 217538^2 + 147182^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=185722.

It is a super-2 number, since 2×68985322568² (a number of 22 digits) contains 22 as substring.

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 68985322568.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 696458 + ... + 789318.

Almost surely, 2^68985322568 is an apocalyptic number.

It is an amenable number.

68985322568 is a deficient number, since it is larger than the sum of its proper divisors (60363550177).

68985322568 is an frugal number, since it uses more digits than its factorization.

68985322568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185728 (or 92863 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 62.

The spelling of 68985322568 in words is "sixty-eight billion, nine hundred eighty-five million, three hundred twenty-two thousand, five hundred sixty-eight".