68134734672 has 40 divisors (see below), whose sum is σ = 176108639040. Its totient is φ = 22699461120.

The previous prime is 68134734671. The next prime is 68134734683. The reversal of 68134734672 is 27643743186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68134734671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287529 + ... + 467912.

It is an arithmetic number, because the mean of its divisors is an integer number (4402715976).

Almost surely, 2^68134734672 is an apocalyptic number.

It is an amenable number.

68134734672 is an abundant number, since it is smaller than the sum of its proper divisors (107973904368).

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

68134734672 is a wasteful number, since it uses less digits than its factorization.

68134734672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757331 (or 757325 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 51.

The spelling of 68134734672 in words is "sixty-eight billion, one hundred thirty-four million, seven hundred thirty-four thousand, six hundred seventy-two".