12105839680 has 112 divisors (see below), whose sum is σ = 31562161920. Its totient is φ = 4386099200.

The previous prime is 12105839633. The next prime is 12105839737. The reversal of 12105839680 is 8693850121.

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, 983001 + ... + 995239.

Almost surely, 2^12105839680 is an apocalyptic number.

12105839680 is a gapful number since it is divisible by the number (10) 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 12105839680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15781080960).

12105839680 is an abundant number, since it is smaller than the sum of its proper divisors (19456322240).

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

12105839680 is a wasteful number, since it uses less digits than its factorization.

12105839680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12548 (or 12538 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 12105839680 in words is "twelve billion, one hundred five million, eight hundred thirty-nine thousand, six hundred eighty".