68237026816 has 480 divisors, whose sum is σ = 177088174560. Its totient is φ = 26085556224.

The previous prime is 68237026787. The next prime is 68237026831. The reversal of 68237026816 is 61862073286.

68237026816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 68237026816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 934753756 + ... + 934753828.

It is an arithmetic number, because the mean of its divisors is an integer number (368933697).

Almost surely, 2^68237026816 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 68237026816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88544087280).

68237026816 is an abundant number, since it is smaller than the sum of its proper divisors (108851147744).

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

68237026816 is a wasteful number, since it uses less digits than its factorization.

68237026816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 68237026816 in words is "sixty-eight billion, two hundred thirty-seven million, twenty-six thousand, eight hundred sixteen".