68811413161 has 2 divisors, whose sum is σ = 68811413162. Its totient is φ = 68811413160.

The previous prime is 68811413149. The next prime is 68811413239. The reversal of 68811413161 is 16131411886.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68520915225 + 290497936 = 261765^2 + 17044^2 .

It is a cyclic number.

It is not a de Polignac number, because 68811413161 - 2¹³ = 68811404969 is a prime.

It is not a weakly prime, because it can be changed into another prime (68811413131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34405706580 + 34405706581.

It is an arithmetic number, because the mean of its divisors is an integer number (34405706581).

Almost surely, 2^68811413161 is an apocalyptic number.

It is an amenable number.

68811413161 is a deficient number, since it is larger than the sum of its proper divisors (1).

68811413161 is an equidigital number, since it uses as much as digits as its factorization.

68811413161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 40.

The spelling of 68811413161 in words is "sixty-eight billion, eight hundred eleven million, four hundred thirteen thousand, one hundred sixty-one".