68290694161 has 2 divisors, whose sum is σ = 68290694162. Its totient is φ = 68290694160.

The previous prime is 68290694149. The next prime is 68290694201. The reversal of 68290694161 is 16149609286.

It is a happy number.

68290694161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66489201025 + 1801493136 = 257855^2 + 42444^2 .

It is a cyclic number.

It is not a de Polignac number, because 68290694161 - 2²⁵ = 68257139729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68290694099 and 68290694108.

It is not a weakly prime, because it can be changed into another prime (68290694261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34145347080 + 34145347081.

It is an arithmetic number, because the mean of its divisors is an integer number (34145347081).

Almost surely, 2^68290694161 is an apocalyptic number.

It is an amenable number.

68290694161 is a deficient number, since it is larger than the sum of its proper divisors (1).

68290694161 is an equidigital number, since it uses as much as digits as its factorization.

68290694161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 68290694161 in words is "sixty-eight billion, two hundred ninety million, six hundred ninety-four thousand, one hundred sixty-one".