12442661268 has 12 divisors (see below), whose sum is σ = 29032876320. Its totient is φ = 4147553752.

The previous prime is 12442661251. The next prime is 12442661269. The reversal of 12442661268 is 86216624421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442661269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518444208 + ... + 518444231.

It is an arithmetic number, because the mean of its divisors is an integer number (2419406360).

Almost surely, 2^12442661268 is an apocalyptic number.

It is an amenable number.

12442661268 is an abundant number, since it is smaller than the sum of its proper divisors (16590215052).

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

12442661268 is a wasteful number, since it uses less digits than its factorization.

12442661268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036888446 (or 1036888444 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The spelling of 12442661268 in words is "twelve billion, four hundred forty-two million, six hundred sixty-one thousand, two hundred sixty-eight".