68905792368 has 640 divisors, whose sum is σ = 252652400640. Its totient is φ = 17517772800.

The previous prime is 68905792343. The next prime is 68905792379. The reversal of 68905792368 is 86329750986.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 119420496 + ... + 119421072.

It is an arithmetic number, because the mean of its divisors is an integer number (394769376).

Almost surely, 2^68905792368 is an apocalyptic number.

68905792368 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68905792368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126326200320).

68905792368 is an abundant number, since it is smaller than the sum of its proper divisors (183746608272).

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

68905792368 is a wasteful number, since it uses less digits than its factorization.

68905792368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 68905792368 in words is "sixty-eight billion, nine hundred five million, seven hundred ninety-two thousand, three hundred sixty-eight".