123022445543 has 4 divisors (see below), whose sum is σ = 123646925160. Its totient is φ = 122397965928.

The previous prime is 123022445519. The next prime is 123022445549. The reversal of 123022445543 is 345544220321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345544220321 = 787 ⋅439065083.

It is a cyclic number.

It is not a de Polignac number, because 123022445543 - 2³⁶ = 54302968807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123022445549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312239513 + ... + 312239906.

It is an arithmetic number, because the mean of its divisors is an integer number (30911731290).

Almost surely, 2^123022445543 is an apocalyptic number.

123022445543 is a deficient number, since it is larger than the sum of its proper divisors (624479617).

123022445543 is an equidigital number, since it uses as much as digits as its factorization.

123022445543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624479616.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 123022445543 its reverse (345544220321), we get a palindrome (468566665864).

The spelling of 123022445543 in words is "one hundred twenty-three billion, twenty-two million, four hundred forty-five thousand, five hundred forty-three".