12165708044 has 144 divisors (see below), whose sum is σ = 26817702912. Its totient is φ = 4802611968.

The previous prime is 12165708031. The next prime is 12165708083. The reversal of 12165708044 is 44080756121.

It is a junction number, because it is equal to n+sod(n) for n = 12165707989 and 12165708007.

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, 14195264 + ... + 14196120.

It is an arithmetic number, because the mean of its divisors is an integer number (186234048).

Almost surely, 2^12165708044 is an apocalyptic number.

12165708044 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 12165708044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13408851456).

12165708044 is an abundant number, since it is smaller than the sum of its proper divisors (14651994868).

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

12165708044 is a wasteful number, since it uses less digits than its factorization.

12165708044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 12165708044 in words is "twelve billion, one hundred sixty-five million, seven hundred eight thousand, forty-four".