68043542833 has 16 divisors (see below), whose sum is σ = 79146000000. Its totient is φ = 57288172032.

The previous prime is 68043542813. The next prime is 68043542867. The reversal of 68043542833 is 33824534086.

It is a de Polignac number, because none of the positive numbers 2^k-68043542833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68043542803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449883 + ... + 581791.

It is an arithmetic number, because the mean of its divisors is an integer number (4946625000).

Almost surely, 2^68043542833 is an apocalyptic number.

It is an amenable number.

68043542833 is a deficient number, since it is larger than the sum of its proper divisors (11102457167).

68043542833 is a wasteful number, since it uses less digits than its factorization.

68043542833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133224.

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 68043542833 in words is "sixty-eight billion, forty-three million, five hundred forty-two thousand, eight hundred thirty-three".