12347661128 has 64 divisors (see below), whose sum is σ = 25764523200. Its totient is φ = 5500293120.

The previous prime is 12347661121. The next prime is 12347661133. The reversal of 12347661128 is 82116674321.

It is not an unprimeable number, because it can be changed into a prime (12347661121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1746176 + ... + 1753232.

It is an arithmetic number, because the mean of its divisors is an integer number (402570675).

Almost surely, 2^12347661128 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 12347661128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12882261600).

12347661128 is an abundant number, since it is smaller than the sum of its proper divisors (13416862072).

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

12347661128 is a wasteful number, since it uses less digits than its factorization.

12347661128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7470 (or 7466 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The spelling of 12347661128 in words is "twelve billion, three hundred forty-seven million, six hundred sixty-one thousand, one hundred twenty-eight".