68134668028 has 24 divisors (see below), whose sum is σ = 136333461600. Its totient is φ = 29186830848.

The previous prime is 68134668013. The next prime is 68134668029. The reversal of 68134668028 is 82086643186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68134668029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511873 + ... + 631096.

It is an arithmetic number, because the mean of its divisors is an integer number (5680560900).

Almost surely, 2^68134668028 is an apocalyptic number.

It is an amenable number.

68134668028 is an abundant number, since it is smaller than the sum of its proper divisors (68198793572).

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

68134668028 is a wasteful number, since it uses less digits than its factorization.

68134668028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145109 (or 1145107 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 68134668028 in words is "sixty-eight billion, one hundred thirty-four million, six hundred sixty-eight thousand, twenty-eight".