257317410353 has 2 divisors, whose sum is σ = 257317410354. Its totient is φ = 257317410352.

The previous prime is 257317410341. The next prime is 257317410479. The reversal of 257317410353 is 353014713752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252273143824 + 5044266529 = 502268^2 + 71023^2 .

It is a cyclic number.

It is not a de Polignac number, because 257317410353 - 2⁶ = 257317410289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257317410353.

It is not a weakly prime, because it can be changed into another prime (257317410653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128658705176 + 128658705177.

It is an arithmetic number, because the mean of its divisors is an integer number (128658705177).

Almost surely, 2^257317410353 is an apocalyptic number.

It is an amenable number.

257317410353 is a deficient number, since it is larger than the sum of its proper divisors (1).

257317410353 is an equidigital number, since it uses as much as digits as its factorization.

257317410353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 257317410353 in words is "two hundred fifty-seven billion, three hundred seventeen million, four hundred ten thousand, three hundred fifty-three".