68647858169904 has 640 divisors, whose sum is σ = 240172128000000. Its totient is φ = 18551759339520.

The previous prime is 68647858169879. The next prime is 68647858169923. The reversal of 68647858169904 is 40996185874686.

68647858169904 is a `hidden beast` number, since 6 + 8 + 6 + 478 + 5 + 81 + 69 + 9 + 0 + 4 = 666.

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, 89648847 + ... + 90411345.

It is an arithmetic number, because the mean of its divisors is an integer number (375268950000).

Almost surely, 2^{68647858169904} 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 68647858169904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120086064000000).

68647858169904 is an abundant number, since it is smaller than the sum of its proper divisors (171524269830096).

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

68647858169904 is a wasteful number, since it uses less digits than its factorization.

68647858169904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762610 (or 762598 counting only the distinct ones).

The product of its (nonzero) digits is 5016453120, while the sum is 81.

The spelling of 68647858169904 in words is "sixty-eight trillion, six hundred forty-seven billion, eight hundred fifty-eight million, one hundred sixty-nine thousand, nine hundred four".