68688289236720 has 320 divisors, whose sum is σ = 228444042645504. Its totient is φ = 17011671613440.

The previous prime is 68688289236709. The next prime is 68688289236817. The reversal of 68688289236720 is 2763298288686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 288741025 + ... + 288978815.

Almost surely, 2^{68688289236720} is an apocalyptic number.

68688289236720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68688289236720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114222021322752).

68688289236720 is an abundant number, since it is smaller than the sum of its proper divisors (159755753408784).

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

68688289236720 is a wasteful number, since it uses less digits than its factorization.

68688289236720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238760 (or 238754 counting only the distinct ones).

The product of its (nonzero) digits is 1337720832, while the sum is 75.

The spelling of 68688289236720 in words is "sixty-eight trillion, six hundred eighty-eight billion, two hundred eighty-nine million, two hundred thirty-six thousand, seven hundred twenty".