5256378344447 has 16 divisors (see below), whose sum is σ = 5774300732160. Its totient is φ = 4762635875712.

The previous prime is 5256378344429. The next prime is 5256378344453. The reversal of 5256378344447 is 7444438736525.

It is a cyclic number.

It is not a de Polignac number, because 5256378344447 - 2¹⁰ = 5256378343423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5256378344447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5256378344407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2872583 + ... + 4331799.

It is an arithmetic number, because the mean of its divisors is an integer number (360893795760).

Almost surely, 2^{5256378344447} is an apocalyptic number.

5256378344447 is a deficient number, since it is larger than the sum of its proper divisors (517922387713).

5256378344447 is a wasteful number, since it uses less digits than its factorization.

5256378344447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467502.

The product of its digits is 270950400, while the sum is 62.

The spelling of 5256378344447 in words is "five trillion, two hundred fifty-six billion, three hundred seventy-eight million, three hundred forty-four thousand, four hundred forty-seven".