20224243412437 has 2 divisors, whose sum is σ = 20224243412438. Its totient is φ = 20224243412436.

The previous prime is 20224243412431. The next prime is 20224243412539. The reversal of 20224243412437 is 73421434242202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14289299654161 + 5934943758276 = 3780119^2 + 2436174^2 .

It is a cyclic number.

It is not a de Polignac number, because 20224243412437 - 2¹⁹ = 20224242888149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20224243412437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20224243412431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112121706218 + 10112121706219.

It is an arithmetic number, because the mean of its divisors is an integer number (10112121706219).

Almost surely, 2^{20224243412437} is an apocalyptic number.

It is an amenable number.

20224243412437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20224243412437 is an equidigital number, since it uses as much as digits as its factorization.

20224243412437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 40.

Adding to 20224243412437 its reverse (73421434242202), we get a palindrome (93645677654639).

The spelling of 20224243412437 in words is "twenty trillion, two hundred twenty-four billion, two hundred forty-three million, four hundred twelve thousand, four hundred thirty-seven".