68812856742 has 64 divisors (see below), whose sum is σ = 162369123840. Its totient is φ = 19033588224.

The previous prime is 68812856731. The next prime is 68812856753. The reversal of 68812856742 is 24765821886.

It is an interprime number because it is at equal distance from previous prime (68812856731) and next prime (68812856753).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35484 + ... + 372672.

It is an arithmetic number, because the mean of its divisors is an integer number (2537017560).

Almost surely, 2^68812856742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68812856742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81184561920).

68812856742 is an abundant number, since it is smaller than the sum of its proper divisors (93556267098).

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

68812856742 is a wasteful number, since it uses less digits than its factorization.

68812856742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337357.

The product of its digits is 10321920, while the sum is 57.

The spelling of 68812856742 in words is "sixty-eight billion, eight hundred twelve million, eight hundred fifty-six thousand, seven hundred forty-two".