20443432144237 has 2 divisors, whose sum is σ = 20443432144238. Its totient is φ = 20443432144236.

The previous prime is 20443432144217. The next prime is 20443432144301. The reversal of 20443432144237 is 73244123434402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16420924571076 + 4022507573161 = 4052274^2 + 2005619^2 .

It is a cyclic number.

It is not a de Polignac number, because 20443432144237 - 2³⁹ = 19893676330349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20443432144193 and 20443432144202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20443432144217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221716072118 + 10221716072119.

It is an arithmetic number, because the mean of its divisors is an integer number (10221716072119).

Almost surely, 2^{20443432144237} is an apocalyptic number.

It is an amenable number.

20443432144237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20443432144237 is an equidigital number, since it uses as much as digits as its factorization.

20443432144237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 43.

Adding to 20443432144237 its reverse (73244123434402), we get a palindrome (93687555578639).

The spelling of 20443432144237 in words is "twenty trillion, four hundred forty-three billion, four hundred thirty-two million, one hundred forty-four thousand, two hundred thirty-seven".