12091443712 has 80 divisors (see below), whose sum is σ = 25891949952. Its totient is φ = 5626368000.

The previous prime is 12091443677. The next prime is 12091443731. The reversal of 12091443712 is 21734419021.

It is a super-2 number, since 2×12091443712² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421837 + ... + 449587.

Almost surely, 2^12091443712 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 12091443712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12945974976).

12091443712 is an abundant number, since it is smaller than the sum of its proper divisors (13800506240).

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

12091443712 is an equidigital number, since it uses as much as digits as its factorization.

12091443712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27829 (or 27813 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 12091443712 in words is "twelve billion, ninety-one million, four hundred forty-three thousand, seven hundred twelve".