68840681171 has 2 divisors, whose sum is σ = 68840681172. Its totient is φ = 68840681170.

The previous prime is 68840681167. The next prime is 68840681207. The reversal of 68840681171 is 17118604886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68840681171 - 2² = 68840681167 is a prime.

It is not a weakly prime, because it can be changed into another prime (68840681971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34420340585 + 34420340586.

It is an arithmetic number, because the mean of its divisors is an integer number (34420340586).

Almost surely, 2^68840681171 is an apocalyptic number.

68840681171 is a deficient number, since it is larger than the sum of its proper divisors (1).

68840681171 is an equidigital number, since it uses as much as digits as its factorization.

68840681171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 50.

The spelling of 68840681171 in words is "sixty-eight billion, eight hundred forty million, six hundred eighty-one thousand, one hundred seventy-one".