20013653450423 has 2 divisors, whose sum is σ = 20013653450424. Its totient is φ = 20013653450422.

The previous prime is 20013653450333. The next prime is 20013653450447. The reversal of 20013653450423 is 32405435631002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013653450423 - 2³⁰ = 20012579708599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013653450473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006826725211 + 10006826725212.

It is an arithmetic number, because the mean of its divisors is an integer number (10006826725212).

Almost surely, 2^{20013653450423} is an apocalyptic number.

20013653450423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013653450423 is an equidigital number, since it uses as much as digits as its factorization.

20013653450423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 20013653450423 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, four hundred fifty thousand, four hundred twenty-three".