256473067433153 has 2 divisors, whose sum is σ = 256473067433154. Its totient is φ = 256473067433152.

The previous prime is 256473067433147. The next prime is 256473067433197. The reversal of 256473067433153 is 351334760374652.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251038420132864 + 5434647300289 = 15844192^2 + 2331233^2 .

It is a cyclic number.

It is not a de Polignac number, because 256473067433153 - 2¹⁶ = 256473067367617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256473067433092 and 256473067433101.

It is not a weakly prime, because it can be changed into another prime (256473067433053) 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 as a sum of consecutive naturals, namely, 128236533716576 + 128236533716577.

It is an arithmetic number, because the mean of its divisors is an integer number (128236533716577).

Almost surely, 2^{256473067433153} is an apocalyptic number.

It is an amenable number.

256473067433153 is a deficient number, since it is larger than the sum of its proper divisors (1).

256473067433153 is an equidigital number, since it uses as much as digits as its factorization.

256473067433153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 114307200, while the sum is 59.

The spelling of 256473067433153 in words is "two hundred fifty-six trillion, four hundred seventy-three billion, sixty-seven million, four hundred thirty-three thousand, one hundred fifty-three".