68456739228 has 12 divisors (see below), whose sum is σ = 159732391560. Its totient is φ = 22818913072.

The previous prime is 68456739203. The next prime is 68456739229. The reversal of 68456739228 is 82293765486.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68456739229) 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, 2852364123 + ... + 2852364146.

It is an arithmetic number, because the mean of its divisors is an integer number (13311032630).

Almost surely, 2^68456739228 is an apocalyptic number.

It is an amenable number.

68456739228 is an abundant number, since it is smaller than the sum of its proper divisors (91275652332).

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

68456739228 is a wasteful number, since it uses less digits than its factorization.

68456739228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704728276 (or 5704728274 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 60.

The spelling of 68456739228 in words is "sixty-eight billion, four hundred fifty-six million, seven hundred thirty-nine thousand, two hundred twenty-eight".