20413203443417 has 2 divisors, whose sum is σ = 20413203443418. Its totient is φ = 20413203443416.

The previous prime is 20413203443411. The next prime is 20413203443443. The reversal of 20413203443417 is 71434430231402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15582685195081 + 4830518248336 = 3947491^2 + 2197844^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413203443417 - 2⁸ = 20413203443161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413203443411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206601721708 + 10206601721709.

It is an arithmetic number, because the mean of its divisors is an integer number (10206601721709).

Almost surely, 2^{20413203443417} is an apocalyptic number.

It is an amenable number.

20413203443417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413203443417 is an equidigital number, since it uses as much as digits as its factorization.

20413203443417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 38.

Adding to 20413203443417 its reverse (71434430231402), we get a palindrome (91847633674819).

The spelling of 20413203443417 in words is "twenty trillion, four hundred thirteen billion, two hundred three million, four hundred forty-three thousand, four hundred seventeen".