12305647266 has 64 divisors (see below), whose sum is σ = 28067060736. Its totient is φ = 3560356800.

The previous prime is 12305647261. The next prime is 12305647267. The reversal of 12305647266 is 66274650321.

It is not an unprimeable number, because it can be changed into a prime (12305647261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859680 + ... + 873876.

It is an arithmetic number, because the mean of its divisors is an integer number (438547824).

Almost surely, 2^12305647266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12305647266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14033530368).

12305647266 is an abundant number, since it is smaller than the sum of its proper divisors (15761413470).

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

12305647266 is a wasteful number, since it uses less digits than its factorization.

12305647266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14807.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 12305647266 in words is "twelve billion, three hundred five million, six hundred forty-seven thousand, two hundred sixty-six".