12260685728 has 48 divisors (see below), whose sum is σ = 24777242280. Its totient is φ = 5970048000.

The previous prime is 12260685713. The next prime is 12260685737. The reversal of 12260685728 is 82758606221.

It can be written as a sum of positive squares in 4 ways, for example, as 8181564304 + 4079121424 = 90452^2 + 63868^2 .

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, 166058 + ... + 228246.

Almost surely, 2^12260685728 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 12260685728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12388621140).

12260685728 is an abundant number, since it is smaller than the sum of its proper divisors (12516556552).

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

12260685728 is a wasteful number, since it uses less digits than its factorization.

12260685728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62361 (or 62353 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 12260685728 in words is "twelve billion, two hundred sixty million, six hundred eighty-five thousand, seven hundred twenty-eight".