68436362752 has 80 divisors (see below), whose sum is σ = 138049758000. Its totient is φ = 33891573760.

The previous prime is 68436362747. The next prime is 68436362779. The reversal of 68436362752 is 25726363486.

It is a self number, because there is not a number n which added to its sum of digits gives 68436362752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31963602 + ... + 31965742.

It is an arithmetic number, because the mean of its divisors is an integer number (1725621975).

Almost surely, 2^68436362752 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 68436362752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69024879000).

68436362752 is an abundant number, since it is smaller than the sum of its proper divisors (69613395248).

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

68436362752 is a wasteful number, since it uses less digits than its factorization.

68436362752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727 (or 2711 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 52.

The spelling of 68436362752 in words is "sixty-eight billion, four hundred thirty-six million, three hundred sixty-two thousand, seven hundred fifty-two".