256734200224673 has 2 divisors, whose sum is σ = 256734200224674. Its totient is φ = 256734200224672.

The previous prime is 256734200224651. The next prime is 256734200224717. The reversal of 256734200224673 is 376422002437652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185328117379729 + 71406082844944 = 13613527^2 + 8450212^2 .

It is a cyclic number.

It is not a de Polignac number, because 256734200224673 - 2¹⁴ = 256734200208289 is a prime.

It is not a weakly prime, because it can be changed into another prime (256734200224573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128367100112336 + 128367100112337.

It is an arithmetic number, because the mean of its divisors is an integer number (128367100112337).

Almost surely, 2^{256734200224673} is an apocalyptic number.

It is an amenable number.

256734200224673 is a deficient number, since it is larger than the sum of its proper divisors (1).

256734200224673 is an equidigital number, since it uses as much as digits as its factorization.

256734200224673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 53.

The spelling of 256734200224673 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, two hundred million, two hundred twenty-four thousand, six hundred seventy-three".