20067440171 has 2 divisors, whose sum is σ = 20067440172. Its totient is φ = 20067440170.

The previous prime is 20067440137. The next prime is 20067440233. The reversal of 20067440171 is 17104476002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20067440171 - 2¹⁴ = 20067423787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20067440971) 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, 10033720085 + 10033720086.

It is an arithmetic number, because the mean of its divisors is an integer number (10033720086).

Almost surely, 2^20067440171 is an apocalyptic number.

20067440171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20067440171 is an equidigital number, since it uses as much as digits as its factorization.

20067440171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The spelling of 20067440171 in words is "twenty billion, sixty-seven million, four hundred forty thousand, one hundred seventy-one".