256230055447 has 2 divisors, whose sum is σ = 256230055448. Its totient is φ = 256230055446.

The previous prime is 256230055381. The next prime is 256230055469. The reversal of 256230055447 is 744550032652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256230055447 - 2¹⁵ = 256230022679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256230056447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128115027723 + 128115027724.

It is an arithmetic number, because the mean of its divisors is an integer number (128115027724).

Almost surely, 2^256230055447 is an apocalyptic number.

256230055447 is a deficient number, since it is larger than the sum of its proper divisors (1).

256230055447 is an equidigital number, since it uses as much as digits as its factorization.

256230055447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 43.

The spelling of 256230055447 in words is "two hundred fifty-six billion, two hundred thirty million, fifty-five thousand, four hundred forty-seven".