68139353076 has 12 divisors (see below), whose sum is σ = 158991823872. Its totient is φ = 22713117688.

The previous prime is 68139353071. The next prime is 68139353123. The reversal of 68139353076 is 67035393186.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68139353071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2839139700 + ... + 2839139723.

It is an arithmetic number, because the mean of its divisors is an integer number (13249318656).

Almost surely, 2^68139353076 is an apocalyptic number.

It is an amenable number.

68139353076 is an abundant number, since it is smaller than the sum of its proper divisors (90852470796).

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

68139353076 is a wasteful number, since it uses less digits than its factorization.

68139353076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5678279430 (or 5678279428 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 68139353076 in words is "sixty-eight billion, one hundred thirty-nine million, three hundred fifty-three thousand, seventy-six".