20344035422143 has 2 divisors, whose sum is σ = 20344035422144. Its totient is φ = 20344035422142.

The previous prime is 20344035422107. The next prime is 20344035422149. The reversal of 20344035422143 is 34122453044302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20344035422143 - 2¹⁷ = 20344035291071 is a prime.

It is a super-2 number, since 2×20344035422143² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344035422149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172017711071 + 10172017711072.

It is an arithmetic number, because the mean of its divisors is an integer number (10172017711072).

Almost surely, 2^{20344035422143} is an apocalyptic number.

20344035422143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344035422143 is an equidigital number, since it uses as much as digits as its factorization.

20344035422143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 20344035422143 its reverse (34122453044302), we get a palindrome (54466488466445).

The spelling of 20344035422143 in words is "twenty trillion, three hundred forty-four billion, thirty-five million, four hundred twenty-two thousand, one hundred forty-three".