123344543263 has 2 divisors, whose sum is σ = 123344543264. Its totient is φ = 123344543262.

The previous prime is 123344543251. The next prime is 123344543279. The reversal of 123344543263 is 362345443321.

It is a weak prime.

It is an emirp because it is prime and its reverse (362345443321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123344543263 - 2²¹ = 123342446111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123344543233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61672271631 + 61672271632.

It is an arithmetic number, because the mean of its divisors is an integer number (61672271632).

Almost surely, 2^123344543263 is an apocalyptic number.

123344543263 is a deficient number, since it is larger than the sum of its proper divisors (1).

123344543263 is an equidigital number, since it uses as much as digits as its factorization.

123344543263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 40.

Adding to 123344543263 its reverse (362345443321), we get a palindrome (485689986584).

The spelling of 123344543263 in words is "one hundred twenty-three billion, three hundred forty-four million, five hundred forty-three thousand, two hundred sixty-three".