68613688422244 has 81 divisors (see below), whose sum is σ = 143563950085689. Its totient is φ = 28609324117920.

The previous prime is 68613688422127. The next prime is 68613688422259. The reversal of 68613688422244 is 44222488631686.

The square root of 68613688422244 is 8283338.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 61396470648100 + 7217217774144 = 7835590^2 + 2686488^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4290761089 + ... + 4290777079.

Almost surely, 2^{68613688422244} is an apocalyptic number.

68613688422244 is the 8283338-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68613688422244

68613688422244 is an abundant number, since it is smaller than the sum of its proper divisors (74950261663445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68613688422244 is an frugal number, since it uses more digits than its factorization.

68613688422244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32074 (or 16037 counting only the distinct ones).

The product of its digits is 169869312, while the sum is 64.

The spelling of 68613688422244 in words is "sixty-eight trillion, six hundred thirteen billion, six hundred eighty-eight million, four hundred twenty-two thousand, two hundred forty-four".