123543113344545 has 32 divisors (see below), whose sum is σ = 200060805958272. Its totient is φ = 65092467095552.

The previous prime is 123543113344529. The next prime is 123543113344597. The reversal of 123543113344545 is 545443311345321.

It is a cyclic number.

It is not a de Polignac number, because 123543113344545 - 2⁴ = 123543113344529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123543113344494 and 123543113344503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21805987 + ... + 26880983.

It is an arithmetic number, because the mean of its divisors is an integer number (6251900186196).

Almost surely, 2^{123543113344545} is an apocalyptic number.

123543113344545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123543113344545 is a deficient number, since it is larger than the sum of its proper divisors (76517692613727).

123543113344545 is a wasteful number, since it uses less digits than its factorization.

123543113344545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094641.

The product of its digits is 5184000, while the sum is 48.

Adding to 123543113344545 its reverse (545443311345321), we get a palindrome (668986424689866).

The spelling of 123543113344545 in words is "one hundred twenty-three trillion, five hundred forty-three billion, one hundred thirteen million, three hundred forty-four thousand, five hundred forty-five".