12256738426 has 8 divisors (see below), whose sum is σ = 18386724564. Its totient is φ = 6127830240.

The previous prime is 12256738423. The next prime is 12256738469. The reversal of 12256738426 is 62483765221.

It can be written as a sum of positive squares in 2 ways, for example, as 12232581201 + 24157225 = 110601^2 + 4915^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12256738423) 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, 240435 + ... + 286918.

Almost surely, 2^12256738426 is an apocalyptic number.

12256738426 is a deficient number, since it is larger than the sum of its proper divisors (6129986138).

12256738426 is a wasteful number, since it uses less digits than its factorization.

12256738426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538976.

The product of its digits is 967680, while the sum is 46.

The spelling of 12256738426 in words is "twelve billion, two hundred fifty-six million, seven hundred thirty-eight thousand, four hundred twenty-six".