68255705161 has 16 divisors (see below), whose sum is σ = 78853840128. Its totient is φ = 57870504000.

The previous prime is 68255705137. The next prime is 68255705173. The reversal of 68255705161 is 16150755286.

It is a cyclic number.

It is not a de Polignac number, because 68255705161 - 2⁷ = 68255705033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68255705101) 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 15 ways as a sum of consecutive naturals, for example, 706131 + ... + 796951.

It is an arithmetic number, because the mean of its divisors is an integer number (4928365008).

Almost surely, 2^68255705161 is an apocalyptic number.

It is an amenable number.

68255705161 is a deficient number, since it is larger than the sum of its proper divisors (10598134967).

68255705161 is a wasteful number, since it uses less digits than its factorization.

68255705161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91992.

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 68255705161 in words is "sixty-eight billion, two hundred fifty-five million, seven hundred five thousand, one hundred sixty-one".