20204004240023 has 2 divisors, whose sum is σ = 20204004240024. Its totient is φ = 20204004240022.

The previous prime is 20204004239977. The next prime is 20204004240037. The reversal of 20204004240023 is 32004240040202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20204004240023 - 2¹⁴ = 20204004223639 is a prime.

It is a super-3 number, since 3×20204004240023³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20204004240523) 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, 10102002120011 + 10102002120012.

It is an arithmetic number, because the mean of its divisors is an integer number (10102002120012).

Almost surely, 2^{20204004240023} is an apocalyptic number.

20204004240023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204004240023 is an equidigital number, since it uses as much as digits as its factorization.

20204004240023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 20204004240023 its reverse (32004240040202), we get a palindrome (52208244280225).

The spelling of 20204004240023 in words is "twenty trillion, two hundred four billion, four million, two hundred forty thousand, twenty-three".