68807658816 has 224 divisors, whose sum is σ = 222911131520. Its totient is φ = 20678934528.

The previous prime is 68807658809. The next prime is 68807658823. The reversal of 68807658816 is 61885670886.

It is an interprime number because it is at equal distance from previous prime (68807658809) and next prime (68807658823).

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, 930336 + ... + 1001568.

It is an arithmetic number, because the mean of its divisors is an integer number (995138980).

Almost surely, 2^68807658816 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 68807658816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111455565760).

68807658816 is an abundant number, since it is smaller than the sum of its proper divisors (154103472704).

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

68807658816 is a wasteful number, since it uses less digits than its factorization.

68807658816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71310 (or 71294 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 63.

The spelling of 68807658816 in words is "sixty-eight billion, eight hundred seven million, six hundred fifty-eight thousand, eight hundred sixteen".