68611796064 has 576 divisors, whose sum is σ = 250857492480. Its totient is φ = 18138193920.

The previous prime is 68611796063. The next prime is 68611796069. The reversal of 68611796064 is 46069711686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 68611796064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68611796063) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30184432 + ... + 30186704.

It is an arithmetic number, because the mean of its divisors is an integer number (435516480).

Almost surely, 2^68611796064 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 68611796064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125428746240).

68611796064 is an abundant number, since it is smaller than the sum of its proper divisors (182245696416).

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

68611796064 is a wasteful number, since it uses less digits than its factorization.

68611796064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2339 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 68611796064 in words is "sixty-eight billion, six hundred eleven million, seven hundred ninety-six thousand, sixty-four".