12746323172 has 48 divisors (see below), whose sum is σ = 26885561472. Its totient is φ = 5215879680.

The previous prime is 12746323129. The next prime is 12746323181. The reversal of 12746323172 is 27132364721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353243 + ... + 387650.

It is an arithmetic number, because the mean of its divisors is an integer number (560115864).

Almost surely, 2^12746323172 is an apocalyptic number.

It is an amenable number.

12746323172 is an abundant number, since it is smaller than the sum of its proper divisors (14139238300).

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

12746323172 is a wasteful number, since it uses less digits than its factorization.

12746323172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740948 (or 740946 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

Adding to 12746323172 its reverse (27132364721), we get a palindrome (39878687893).

The spelling of 12746323172 in words is "twelve billion, seven hundred forty-six million, three hundred twenty-three thousand, one hundred seventy-two".