12122823585438 has 96 divisors (see below), whose sum is σ = 27759610438560. Its totient is φ = 3812907479040.

The previous prime is 12122823585409. The next prime is 12122823585443. The reversal of 12122823585438 is 83458532822121.

12122823585438 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 2 + 8 + 23 + 585 + 4 + 38 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 102920418 + ... + 103038138.

It is an arithmetic number, because the mean of its divisors is an integer number (289162608735).

Almost surely, 2^{12122823585438} is an apocalyptic number.

12122823585438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122823585438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13879805219280).

12122823585438 is an abundant number, since it is smaller than the sum of its proper divisors (15636786853122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12122823585438 is a wasteful number, since it uses less digits than its factorization.

12122823585438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118954 (or 118951 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 12122823585438 in words is "twelve trillion, one hundred twenty-two billion, eight hundred twenty-three million, five hundred eighty-five thousand, four hundred thirty-eight".