12261428168 has 32 divisors (see below), whose sum is σ = 25152120000. Its totient is φ = 5557392960.

The previous prime is 12261428147. The next prime is 12261428191. The reversal of 12261428168 is 86182416221.

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, 168908 + ... + 230331.

It is an arithmetic number, because the mean of its divisors is an integer number (786003750).

Almost surely, 2^12261428168 is an apocalyptic number.

It is an amenable number.

12261428168 is an abundant number, since it is smaller than the sum of its proper divisors (12890691832).

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

12261428168 is a wasteful number, since it uses less digits than its factorization.

12261428168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399605 (or 399601 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The spelling of 12261428168 in words is "twelve billion, two hundred sixty-one million, four hundred twenty-eight thousand, one hundred sixty-eight".