123855484558321 has 4 divisors (see below), whose sum is σ = 123858948211200. Its totient is φ = 123852020905444.

The previous prime is 123855484558279. The next prime is 123855484558327.

123855484558321 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123855484558321 - 2¹⁷ = 123855484427249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123855484558327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1731772801 + ... + 1731844318.

It is an arithmetic number, because the mean of its divisors is an integer number (30964737052800).

Almost surely, 2^{123855484558321} is an apocalyptic number.

It is an amenable number.

123855484558321 is a deficient number, since it is larger than the sum of its proper divisors (3463652879).

123855484558321 is an equidigital number, since it uses as much as digits as its factorization.

123855484558321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463652878.

The product of its digits is 184320000, while the sum is 64.

The spelling of 123855484558321 in words is "one hundred twenty-three trillion, eight hundred fifty-five billion, four hundred eighty-four million, five hundred fifty-eight thousand, three hundred twenty-one".