12256712349 has 8 divisors (see below), whose sum is σ = 18676895040. Its totient is φ = 7003835616.

The previous prime is 12256712257. The next prime is 12256712357. The reversal of 12256712349 is 94321765221.

It is a happy number.

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

It is not a de Polignac number, because 12256712349 - 2¹⁷ = 12256581277 is a prime.

It is a super-3 number, since 3×12256712349³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12256712349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256712359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291826464 + ... + 291826505.

It is an arithmetic number, because the mean of its divisors is an integer number (2334611880).

Almost surely, 2^12256712349 is an apocalyptic number.

It is an amenable number.

12256712349 is a deficient number, since it is larger than the sum of its proper divisors (6420182691).

12256712349 is an equidigital number, since it uses as much as digits as its factorization.

12256712349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583652979.

The product of its digits is 181440, while the sum is 42.

The spelling of 12256712349 in words is "twelve billion, two hundred fifty-six million, seven hundred twelve thousand, three hundred forty-nine".