12256847947 has 2 divisors, whose sum is σ = 12256847948. Its totient is φ = 12256847946.

The previous prime is 12256847923. The next prime is 12256847963. The reversal of 12256847947 is 74974865221.

It is a strong prime.

It is an emirp because it is prime and its reverse (74974865221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12256847947 - 2¹¹ = 12256845899 is a prime.

It is a super-2 number, since 2×12256847947² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12256847747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6128423973 + 6128423974.

It is an arithmetic number, because the mean of its divisors is an integer number (6128423974).

Almost surely, 2^12256847947 is an apocalyptic number.

12256847947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256847947 is an equidigital number, since it uses as much as digits as its factorization.

12256847947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The spelling of 12256847947 in words is "twelve billion, two hundred fifty-six million, eight hundred forty-seven thousand, nine hundred forty-seven".