12105735239388 has 144 divisors (see below), whose sum is σ = 34364465775360. Its totient is φ = 3300929888256.

The previous prime is 12105735239363. The next prime is 12105735239441. The reversal of 12105735239388 is 88393253750121.

It is a super-2 number, since 2×12105735239388² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4980828 + ... + 7001436.

It is an arithmetic number, because the mean of its divisors is an integer number (238642123440).

Almost surely, 2^{12105735239388} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12105735239388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17182232887680).

12105735239388 is an abundant number, since it is smaller than the sum of its proper divisors (22258730535972).

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

12105735239388 is a wasteful number, since it uses less digits than its factorization.

12105735239388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021096 (or 2021087 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 12105735239388 in words is "twelve trillion, one hundred five billion, seven hundred thirty-five million, two hundred thirty-nine thousand, three hundred eighty-eight".