68542805848 has 64 divisors (see below), whose sum is σ = 142856784000. Its totient is φ = 30567763200.

The previous prime is 68542805797. The next prime is 68542805857. The reversal of 68542805848 is 84850824586.

It is a junction number, because it is equal to n+sod(n) for n = 68542805792 and 68542805801.

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, 2692363 + ... + 2717701.

It is an arithmetic number, because the mean of its divisors is an integer number (2232137250).

Almost surely, 2^68542805848 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 68542805848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71428392000).

68542805848 is an abundant number, since it is smaller than the sum of its proper divisors (74313978152).

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

68542805848 is a wasteful number, since it uses less digits than its factorization.

68542805848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25936 (or 25932 counting only the distinct ones).

The product of its (nonzero) digits is 19660800, while the sum is 58.

The spelling of 68542805848 in words is "sixty-eight billion, five hundred forty-two million, eight hundred five thousand, eight hundred forty-eight".