123354203240544 has 24 divisors (see below), whose sum is σ = 323804783506680. Its totient is φ = 41118067746816.

The previous prime is 123354203240509. The next prime is 123354203240563. The reversal of 123354203240544 is 445042302453321.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 123354203240496 and 123354203240505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642469808449 + ... + 642469808640.

It is an arithmetic number, because the mean of its divisors is an integer number (13491865979445).

Almost surely, 2^{123354203240544} is an apocalyptic number.

It is an amenable number.

123354203240544 is an abundant number, since it is smaller than the sum of its proper divisors (200450580266136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123354203240544 is a wasteful number, since it uses less digits than its factorization.

123354203240544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284939617102 (or 1284939617094 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 42.

Adding to 123354203240544 its reverse (445042302453321), we get a palindrome (568396505693865).

The spelling of 123354203240544 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, two hundred three million, two hundred forty thousand, five hundred forty-four".