123555343523 has 8 divisors (see below), whose sum is σ = 134543024400. Its totient is φ = 113016139488.

The previous prime is 123555343493. The next prime is 123555343537. The reversal of 123555343523 is 325343555321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123555343523 - 2¹⁶ = 123555277987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123555343573) 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 in 7 ways as a sum of consecutive naturals, for example, 112118636 + ... + 112119737.

It is an arithmetic number, because the mean of its divisors is an integer number (16817878050).

Almost surely, 2^123555343523 is an apocalyptic number.

123555343523 is a deficient number, since it is larger than the sum of its proper divisors (10987680877).

123555343523 is a wasteful number, since it uses less digits than its factorization.

123555343523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224238421.

The product of its digits is 810000, while the sum is 41.

Adding to 123555343523 its reverse (325343555321), we get a palindrome (448898898844).

The spelling of 123555343523 in words is "one hundred twenty-three billion, five hundred fifty-five million, three hundred forty-three thousand, five hundred twenty-three".