20144342243 has 2 divisors, whose sum is σ = 20144342244. Its totient is φ = 20144342242.

The previous prime is 20144342227. The next prime is 20144342263. The reversal of 20144342243 is 34224344102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20144342243 - 2⁴ = 20144342227 is a prime.

It is a super-2 number, since 2×20144342243² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20144342263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072171121 + 10072171122.

It is an arithmetic number, because the mean of its divisors is an integer number (10072171122).

Almost surely, 2^20144342243 is an apocalyptic number.

20144342243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20144342243 is an equidigital number, since it uses as much as digits as its factorization.

20144342243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 20144342243 its reverse (34224344102), we get a palindrome (54368686345).

The spelling of 20144342243 in words is "twenty billion, one hundred forty-four million, three hundred forty-two thousand, two hundred forty-three".