12263441257 has 4 divisors (see below), whose sum is σ = 12302873856. Its totient is φ = 12224008660.

The previous prime is 12263441233. The next prime is 12263441261. The reversal of 12263441257 is 75214436221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12263441257 - 2⁷ = 12263441129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12263141257) 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 3 ways as a sum of consecutive naturals, for example, 19715833 + ... + 19716454.

It is an arithmetic number, because the mean of its divisors is an integer number (3075718464).

Almost surely, 2^12263441257 is an apocalyptic number.

It is an amenable number.

12263441257 is a deficient number, since it is larger than the sum of its proper divisors (39432599).

12263441257 is an equidigital number, since it uses as much as digits as its factorization.

12263441257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39432598.

The product of its digits is 80640, while the sum is 37.

Adding to 12263441257 its reverse (75214436221), we get a palindrome (87477877478).

The spelling of 12263441257 in words is "twelve billion, two hundred sixty-three million, four hundred forty-one thousand, two hundred fifty-seven".