12168853844 has 120 divisors (see below), whose sum is σ = 26691087528. Its totient is φ = 4836464640.

The previous prime is 12168853831. The next prime is 12168853859. The reversal of 12168853844 is 44835886121.

It can be written as a sum of positive squares in 4 ways, for example, as 4057690000 + 8111163844 = 63700^2 + 90062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12168853792 and 12168853801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11918054 + ... + 11919074.

Almost surely, 2^12168853844 is an apocalyptic number.

12168853844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12168853844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13345543764).

12168853844 is an abundant number, since it is smaller than the sum of its proper divisors (14522233684).

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

12168853844 is a wasteful number, since it uses less digits than its factorization.

12168853844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1120 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The spelling of 12168853844 in words is "twelve billion, one hundred sixty-eight million, eight hundred fifty-three thousand, eight hundred forty-four".