12566746322 has 8 divisors (see below), whose sum is σ = 20300128716. Its totient is φ = 5800036752.

The previous prime is 12566746261. The next prime is 12566746327. The reversal of 12566746322 is 22364766521.

It can be written as a sum of positive squares in 2 ways, for example, as 11813298721 + 753447601 = 108689^2 + 27449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12566746322² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12566746327) 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, 241668173 + ... + 241668224.

Almost surely, 2^12566746322 is an apocalyptic number.

12566746322 is a deficient number, since it is larger than the sum of its proper divisors (7733382394).

12566746322 is a wasteful number, since it uses less digits than its factorization.

12566746322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483336412.

The product of its digits is 725760, while the sum is 44.

The spelling of 12566746322 in words is "twelve billion, five hundred sixty-six million, seven hundred forty-six thousand, three hundred twenty-two".