20024404237 has 2 divisors, whose sum is σ = 20024404238. Its totient is φ = 20024404236.

The previous prime is 20024404207. The next prime is 20024404241. The reversal of 20024404237 is 73240442002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18776124676 + 1248279561 = 137026^2 + 35331^2 .

It is a cyclic number.

It is not a de Polignac number, because 20024404237 - 2⁷ = 20024404109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20024404207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012202118 + 10012202119.

It is an arithmetic number, because the mean of its divisors is an integer number (10012202119).

Almost surely, 2^20024404237 is an apocalyptic number.

It is an amenable number.

20024404237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20024404237 is an equidigital number, since it uses as much as digits as its factorization.

20024404237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 28.

Adding to 20024404237 its reverse (73240442002), we get a palindrome (93264846239).

The spelling of 20024404237 in words is "twenty billion, twenty-four million, four hundred four thousand, two hundred thirty-seven".