68066034560 has 128 divisors (see below), whose sum is σ = 168713344800. Its totient is φ = 26227941376.

The previous prime is 68066034539. The next prime is 68066034571. The reversal of 68066034560 is 6543066086.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×68066034560² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8663594 + ... + 8671446.

Almost surely, 2^68066034560 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 68066034560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84356672400).

68066034560 is an abundant number, since it is smaller than the sum of its proper divisors (100647310240).

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

68066034560 is a wasteful number, since it uses less digits than its factorization.

68066034560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8368 (or 8356 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 68066034560 in words is "sixty-eight billion, sixty-six million, thirty-four thousand, five hundred sixty".