257323176156413 has 2 divisors, whose sum is σ = 257323176156414. Its totient is φ = 257323176156412.

The previous prime is 257323176156407. The next prime is 257323176156461. The reversal of 257323176156413 is 314651671323752.

257323176156413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166193298993604 + 91129877162809 = 12891598^2 + 9546197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257323176156413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257323176156463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128661588078206 + 128661588078207.

It is an arithmetic number, because the mean of its divisors is an integer number (128661588078207).

Almost surely, 2^{257323176156413} is an apocalyptic number.

It is an amenable number.

257323176156413 is a deficient number, since it is larger than the sum of its proper divisors (1).

257323176156413 is an equidigital number, since it uses as much as digits as its factorization.

257323176156413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19051200, while the sum is 56.

The spelling of 257323176156413 in words is "two hundred fifty-seven trillion, three hundred twenty-three billion, one hundred seventy-six million, one hundred fifty-six thousand, four hundred thirteen".