68444744688 has 120 divisors (see below), whose sum is σ = 199014012288. Its totient is φ = 22772498112.

The previous prime is 68444744671. The next prime is 68444744689. The reversal of 68444744688 is 88644744486.

68444744688 is a `hidden beast` number, since 6 + 8 + 44 + 474 + 46 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68444744689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2110645 + ... + 2142827.

Almost surely, 2^68444744688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68444744688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99507006144).

68444744688 is an abundant number, since it is smaller than the sum of its proper divisors (130569267600).

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

68444744688 is a wasteful number, since it uses less digits than its factorization.

68444744688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32753 (or 32735 counting only the distinct ones).

The product of its digits is 132120576, while the sum is 63.

The spelling of 68444744688 in words is "sixty-eight billion, four hundred forty-four million, seven hundred forty-four thousand, six hundred eighty-eight".