12666126937312 has 48 divisors (see below), whose sum is σ = 25468348292352. Its totient is φ = 6197989260160.

The previous prime is 12666126937309. The next prime is 12666126937319. The reversal of 12666126937312 is 21373962166621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666126937319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29510487 + ... + 29936617.

It is an arithmetic number, because the mean of its divisors is an integer number (530590589424).

Almost surely, 2^{12666126937312} is an apocalyptic number.

It is an amenable number.

12666126937312 is an abundant number, since it is smaller than the sum of its proper divisors (12802221355040).

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

12666126937312 is a wasteful number, since it uses less digits than its factorization.

12666126937312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445951 (or 445943 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 55.

The spelling of 12666126937312 in words is "twelve trillion, six hundred sixty-six billion, one hundred twenty-six million, nine hundred thirty-seven thousand, three hundred twelve".