12047205888 has 120 divisors (see below), whose sum is σ = 34901895600. Its totient is φ = 4000395264.

The previous prime is 12047205871. The next prime is 12047205901. The reversal of 12047205888 is 88850274021.

It is a happy number.

12047205888 is a `hidden beast` number, since 1 + 2 + 0 + 47 + 20 + 588 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1234693 + ... + 1244411.

It is an arithmetic number, because the mean of its divisors is an integer number (290849130).

Almost surely, 2^12047205888 is an apocalyptic number.

12047205888 is a gapful number since it is divisible by the number (18) 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 12047205888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17450947800).

12047205888 is an abundant number, since it is smaller than the sum of its proper divisors (22854689712).

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

12047205888 is an equidigital number, since it uses as much as digits as its factorization.

12047205888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012 (or 9993 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 12047205888 in words is "twelve billion, forty-seven million, two hundred five thousand, eight hundred eighty-eight".