68428816500 has 192 divisors, whose sum is σ = 230167671552. Its totient is φ = 15612928000.

The previous prime is 68428816481. The next prime is 68428816513. The reversal of 68428816500 is 561882486.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68428816500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 158524 + ... + 402476.

It is an arithmetic number, because the mean of its divisors is an integer number (1198789956).

Almost surely, 2^68428816500 is an apocalyptic number.

68428816500 is a gapful number since it is divisible by the number (60) 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 68428816500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115083835776).

68428816500 is an abundant number, since it is smaller than the sum of its proper divisors (161738855052).

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

68428816500 is a wasteful number, since it uses less digits than its factorization.

68428816500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244003 (or 243991 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 68428816500 in words is "sixty-eight billion, four hundred twenty-eight million, eight hundred sixteen thousand, five hundred".