68042072836 has 24 divisors (see below), whose sum is σ = 119729960000. Its totient is φ = 33833679264.

The previous prime is 68042072821. The next prime is 68042072849. The reversal of 68042072836 is 63827024086.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1714870 + ... + 1754098.

Almost surely, 2^68042072836 is an apocalyptic number.

It is an amenable number.

68042072836 is a deficient number, since it is larger than the sum of its proper divisors (51687887164).

68042072836 is a wasteful number, since it uses less digits than its factorization.

68042072836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41611 (or 41609 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 68042072836 in words is "sixty-eight billion, forty-two million, seventy-two thousand, eight hundred thirty-six".