68812768736 has 24 divisors (see below), whose sum is σ = 137696046264. Its totient is φ = 33842344320.

The previous prime is 68812768729. The next prime is 68812768747. The reversal of 68812768736 is 63786721886.

It is a super-3 number, since 3×68812768736³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17624270 + ... + 17628173.

It is an arithmetic number, because the mean of its divisors is an integer number (5737335261).

Almost surely, 2^68812768736 is an apocalyptic number.

It is an amenable number.

68812768736 is an abundant number, since it is smaller than the sum of its proper divisors (68883277528).

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

68812768736 is a wasteful number, since it uses less digits than its factorization.

68812768736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35252514 (or 35252506 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 62.

The spelling of 68812768736 in words is "sixty-eight billion, eight hundred twelve million, seven hundred sixty-eight thousand, seven hundred thirty-six".