20430432442213 has 2 divisors, whose sum is σ = 20430432442214. Its totient is φ = 20430432442212.

The previous prime is 20430432442159. The next prime is 20430432442243. The reversal of 20430432442213 is 31224423403402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20357981568324 + 72450873889 = 4511982^2 + 269167^2 .

It is a cyclic number.

It is not a de Polignac number, because 20430432442213 - 2¹³ = 20430432434021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20430432442243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215216221106 + 10215216221107.

It is an arithmetic number, because the mean of its divisors is an integer number (10215216221107).

Almost surely, 2^{20430432442213} is an apocalyptic number.

It is an amenable number.

20430432442213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430432442213 is an equidigital number, since it uses as much as digits as its factorization.

20430432442213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 20430432442213 its reverse (31224423403402), we get a palindrome (51654855845615).

The spelling of 20430432442213 in words is "twenty trillion, four hundred thirty billion, four hundred thirty-two million, four hundred forty-two thousand, two hundred thirteen".