123544450413005 has 16 divisors (see below), whose sum is σ = 150321771612144. Its totient is φ = 97457283072000.

The previous prime is 123544450413001. The next prime is 123544450413011. The reversal of 123544450413005 is 500314054445321.

It can be written as a sum of positive squares in 8 ways, for example, as 19493964548809 + 104050485864196 = 4415197^2 + 10200514^2 .

It is not a de Polignac number, because 123544450413005 - 2² = 123544450413001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123544450413001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40838804 + ... + 43759533.

It is an arithmetic number, because the mean of its divisors is an integer number (9395110725759).

Almost surely, 2^{123544450413005} is an apocalyptic number.

It is an amenable number.

123544450413005 is a deficient number, since it is larger than the sum of its proper divisors (26777321199139).

123544450413005 is an equidigital number, since it uses as much as digits as its factorization.

123544450413005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84602416.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 123544450413005 in words is "one hundred twenty-three trillion, five hundred forty-four billion, four hundred fifty million, four hundred thirteen thousand, five".