20302404224161 has 2 divisors, whose sum is σ = 20302404224162. Its totient is φ = 20302404224160.

The previous prime is 20302404224129. The next prime is 20302404224209. The reversal of 20302404224161 is 16142240420302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18624135793761 + 1678268430400 = 4315569^2 + 1295480^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302404224161 - 2⁵ = 20302404224129 is a prime.

It is not a weakly prime, because it can be changed into another prime (20302404224101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151202112080 + 10151202112081.

It is an arithmetic number, because the mean of its divisors is an integer number (10151202112081).

Almost surely, 2^{20302404224161} is an apocalyptic number.

It is an amenable number.

20302404224161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302404224161 is an equidigital number, since it uses as much as digits as its factorization.

20302404224161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 20302404224161 its reverse (16142240420302), we get a palindrome (36444644644463).

The spelling of 20302404224161 in words is "twenty trillion, three hundred two billion, four hundred four million, two hundred twenty-four thousand, one hundred sixty-one".