20444308223 has 2 divisors, whose sum is σ = 20444308224. Its totient is φ = 20444308222.

The previous prime is 20444308217. The next prime is 20444308231. The reversal of 20444308223 is 32280344402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20444308223 is a prime.

It is a super-3 number, since 3×20444308223³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20444308223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20444338223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222154111 + 10222154112.

It is an arithmetic number, because the mean of its divisors is an integer number (10222154112).

Almost surely, 2^20444308223 is an apocalyptic number.

20444308223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444308223 is an equidigital number, since it uses as much as digits as its factorization.

20444308223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 32.

The spelling of 20444308223 in words is "twenty billion, four hundred forty-four million, three hundred eight thousand, two hundred twenty-three".