68468747688 has 128 divisors (see below), whose sum is σ = 207559065600. Its totient is φ = 20740305600.

The previous prime is 68468747663. The next prime is 68468747701. The reversal of 68468747688 is 88674786486.

68468747688 is a `hidden beast` number, since 68 + 468 + 7 + 47 + 68 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11142745 + ... + 11148887.

It is an arithmetic number, because the mean of its divisors is an integer number (1621555200).

Almost surely, 2^68468747688 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 68468747688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103779532800).

68468747688 is an abundant number, since it is smaller than the sum of its proper divisors (139090317912).

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

68468747688 is a wasteful number, since it uses less digits than its factorization.

68468747688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10860 (or 10850 counting only the distinct ones).

The product of its digits is 693633024, while the sum is 72.

The spelling of 68468747688 in words is "sixty-eight billion, four hundred sixty-eight million, seven hundred forty-seven thousand, six hundred eighty-eight".