68756320064 has 28 divisors (see below), whose sum is σ = 137762979744. Its totient is φ = 34044388224.

The previous prime is 68756320051. The next prime is 68756320121. The reversal of 68756320064 is 46002365786.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5208542 + ... + 5221725.

Almost surely, 2^68756320064 is an apocalyptic number.

68756320064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68756320064 is an abundant number, since it is smaller than the sum of its proper divisors (69006659680).

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

68756320064 is a wasteful number, since it uses less digits than its factorization.

68756320064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10430382 (or 10430372 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 68756320064 in words is "sixty-eight billion, seven hundred fifty-six million, three hundred twenty thousand, sixty-four".