20443760227249 has 2 divisors, whose sum is σ = 20443760227250. Its totient is φ = 20443760227248.

The previous prime is 20443760227243. The next prime is 20443760227301. The reversal of 20443760227249 is 94272206734402.

It is an a-pointer prime, because the next prime (20443760227301) can be obtained adding 20443760227249 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16080541103025 + 4363219124224 = 4010055^2 + 2088832^2 .

It is a cyclic number.

It is not a de Polignac number, because 20443760227249 - 2⁹ = 20443760226737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20443760227196 and 20443760227205.

It is not a weakly prime, because it can be changed into another prime (20443760227243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221880113624 + 10221880113625.

It is an arithmetic number, because the mean of its divisors is an integer number (10221880113625).

Almost surely, 2^{20443760227249} is an apocalyptic number.

It is an amenable number.

20443760227249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20443760227249 is an equidigital number, since it uses as much as digits as its factorization.

20443760227249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 52.

The spelling of 20443760227249 in words is "twenty trillion, four hundred forty-three billion, seven hundred sixty million, two hundred twenty-seven thousand, two hundred forty-nine".