68604356568 has 128 divisors (see below), whose sum is σ = 189791723520. Its totient is φ = 20492559360.

The previous prime is 68604356539. The next prime is 68604356573. The reversal of 68604356568 is 86565340686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5257380 + ... + 5270412.

It is an arithmetic number, because the mean of its divisors is an integer number (1482747840).

Almost surely, 2^68604356568 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 68604356568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94895861760).

68604356568 is an abundant number, since it is smaller than the sum of its proper divisors (121187366952).

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

68604356568 is a wasteful number, since it uses less digits than its factorization.

68604356568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13337 (or 13333 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 57.

The spelling of 68604356568 in words is "sixty-eight billion, six hundred four million, three hundred fifty-six thousand, five hundred sixty-eight".