123354111353543 has 8 divisors (see below), whose sum is σ = 140984775703200. Its totient is φ = 105725609114400.

The previous prime is 123354111353497. The next prime is 123354111353587. The reversal of 123354111353543 is 345353111453321.

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 123354111353543 - 2²⁰ = 123354110304967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123354111353494 and 123354111353503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123354111355543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540405368 + ... + 540633581.

It is an arithmetic number, because the mean of its divisors is an integer number (17623096962900).

Almost surely, 2^{123354111353543} is an apocalyptic number.

123354111353543 is a deficient number, since it is larger than the sum of its proper divisors (17630664349657).

123354111353543 is a wasteful number, since it uses less digits than its factorization.

123354111353543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081055257.

The product of its digits is 972000, while the sum is 44.

The spelling of 123354111353543 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, one hundred eleven million, three hundred fifty-three thousand, five hundred forty-three".