68357332728 has 56 divisors (see below), whose sum is σ = 192167106600. Its totient is φ = 22785775632.

The previous prime is 68357332727. The next prime is 68357332817. The reversal of 68357332728 is 82723375386.

68357332728 is a `hidden beast` number, since 68 + 3 + 573 + 3 + 2 + 7 + 2 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68357332727) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5854708 + ... + 5866371.

It is an arithmetic number, because the mean of its divisors is an integer number (3431555475).

Almost surely, 2^68357332728 is an apocalyptic number.

It is an amenable number.

68357332728 is an abundant number, since it is smaller than the sum of its proper divisors (123809773872).

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

68357332728 is a wasteful number, since it uses less digits than its factorization.

68357332728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11721103 (or 11721084 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 68357332728 in words is "sixty-eight billion, three hundred fifty-seven million, three hundred thirty-two thousand, seven hundred twenty-eight".