123789112405 has 16 divisors (see below), whose sum is σ = 169959363840. Its totient is φ = 84788243712.

The previous prime is 123789112397. The next prime is 123789112427. The reversal of 123789112405 is 504211987321.

It is a cyclic number.

It is not a de Polignac number, because 123789112405 - 2³ = 123789112397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1962660 + ... + 2024749.

It is an arithmetic number, because the mean of its divisors is an integer number (10622460240).

Almost surely, 2^123789112405 is an apocalyptic number.

It is an amenable number.

123789112405 is a deficient number, since it is larger than the sum of its proper divisors (46170251435).

123789112405 is an equidigital number, since it uses as much as digits as its factorization.

123789112405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988308.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 123789112405 in words is "one hundred twenty-three billion, seven hundred eighty-nine million, one hundred twelve thousand, four hundred five".