20071043189 has 2 divisors, whose sum is σ = 20071043190. Its totient is φ = 20071043188.

The previous prime is 20071043159. The next prime is 20071043263. The reversal of 20071043189 is 98134017002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19719180625 + 351862564 = 140425^2 + 18758^2 .

It is a cyclic number.

It is not a de Polignac number, because 20071043189 - 2⁸ = 20071042933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20071043119) 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, 10035521594 + 10035521595.

It is an arithmetic number, because the mean of its divisors is an integer number (10035521595).

Almost surely, 2^20071043189 is an apocalyptic number.

It is an amenable number.

20071043189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20071043189 is an equidigital number, since it uses as much as digits as its factorization.

20071043189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 20071043189 in words is "twenty billion, seventy-one million, forty-three thousand, one hundred eighty-nine".