20345201023471 has 2 divisors, whose sum is σ = 20345201023472. Its totient is φ = 20345201023470.

The previous prime is 20345201023439. The next prime is 20345201023519. The reversal of 20345201023471 is 17432010254302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20345201023471 - 2⁵ = 20345201023439 is a prime.

It is a super-3 number, since 3×20345201023471³ (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 (20345201021471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172600511735 + 10172600511736.

It is an arithmetic number, because the mean of its divisors is an integer number (10172600511736).

Almost surely, 2^{20345201023471} is an apocalyptic number.

20345201023471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345201023471 is an equidigital number, since it uses as much as digits as its factorization.

20345201023471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 20345201023471 its reverse (17432010254302), we get a palindrome (37777211277773).

The spelling of 20345201023471 in words is "twenty trillion, three hundred forty-five billion, two hundred one million, twenty-three thousand, four hundred seventy-one".