68545873280 has 192 divisors, whose sum is σ = 172135318320. Its totient is φ = 26098913280.

The previous prime is 68545873273. The next prime is 68545873289. The reversal of 68545873280 is 8237854586.

It is a happy number.

68545873280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68545873289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99197735 + ... + 99198425.

Almost surely, 2^68545873280 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 68545873280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86067659160).

68545873280 is an abundant number, since it is smaller than the sum of its proper divisors (103589445040).

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

68545873280 is a wasteful number, since it uses less digits than its factorization.

68545873280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 68545873280 in words is "sixty-eight billion, five hundred forty-five million, eight hundred seventy-three thousand, two hundred eighty".