68990522882 has 18 divisors (see below), whose sum is σ = 104856913539. Its totient is φ = 34044125700.

The previous prime is 68990522819. The next prime is 68990522897. The reversal of 68990522882 is 28822509986.

It can be written as a sum of positive squares in only one way, i.e., 34495261441 + 34495261441 = 185729^2 + 185729^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=185729.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29344007 + ... + 29346357.

Almost surely, 2^68990522882 is an apocalyptic number.

68990522882 is a deficient number, since it is larger than the sum of its proper divisors (35866390657).

68990522882 is an frugal number, since it uses more digits than its factorization.

68990522882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 59.

The spelling of 68990522882 in words is "sixty-eight billion, nine hundred ninety million, five hundred twenty-two thousand, eight hundred eighty-two".