20195143444027 has 2 divisors, whose sum is σ = 20195143444028. Its totient is φ = 20195143444026.

The previous prime is 20195143443997. The next prime is 20195143444037. The reversal of 20195143444027 is 72044434159102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20195143444027 - 2¹⁹ = 20195142919739 is a prime.

It is not a weakly prime, because it can be changed into another prime (20195143444037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10097571722013 + 10097571722014.

It is an arithmetic number, because the mean of its divisors is an integer number (10097571722014).

Almost surely, 2^{20195143444027} is an apocalyptic number.

20195143444027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20195143444027 is an equidigital number, since it uses as much as digits as its factorization.

20195143444027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 20195143444027 in words is "twenty trillion, one hundred ninety-five billion, one hundred forty-three million, four hundred forty-four thousand, twenty-seven".