20411443231423 has 2 divisors, whose sum is σ = 20411443231424. Its totient is φ = 20411443231422.

The previous prime is 20411443231409. The next prime is 20411443231427. The reversal of 20411443231423 is 32413234411402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20411443231423 - 2⁵ = 20411443231391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20411443231427) 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, 10205721615711 + 10205721615712.

It is an arithmetic number, because the mean of its divisors is an integer number (10205721615712).

Almost surely, 2^{20411443231423} is an apocalyptic number.

20411443231423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20411443231423 is an equidigital number, since it uses as much as digits as its factorization.

20411443231423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 20411443231423 its reverse (32413234411402), we get a palindrome (52824677642825).

The spelling of 20411443231423 in words is "twenty trillion, four hundred eleven billion, four hundred forty-three million, two hundred thirty-one thousand, four hundred twenty-three".