68285842506 has 128 divisors (see below), whose sum is σ = 174995251200. Its totient is φ = 19334064960.

The previous prime is 68285842451. The next prime is 68285842531. The reversal of 68285842506 is 60524858286.

It is a happy number.

68285842506 is a `hidden beast` number, since 6 + 8 + 2 + 8 + 584 + 2 + 50 + 6 = 666.

68285842506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon 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, 43136191 + ... + 43137773.

It is an arithmetic number, because the mean of its divisors is an integer number (1367150400).

Almost surely, 2^68285842506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68285842506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87497625600).

68285842506 is an abundant number, since it is smaller than the sum of its proper divisors (106709408694).

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

68285842506 is a wasteful number, since it uses less digits than its factorization.

68285842506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 68285842506 in words is "sixty-eight billion, two hundred eighty-five million, eight hundred forty-two thousand, five hundred six".