257203430571203 has 2 divisors, whose sum is σ = 257203430571204. Its totient is φ = 257203430571202.

The previous prime is 257203430571173. The next prime is 257203430571253. The reversal of 257203430571203 is 302175034302752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257203430571203 - 2⁴⁰ = 256103918943427 is a prime.

It is a super-4 number, since 4×257203430571203⁴ (a number of 59 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (257203430571253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128601715285601 + 128601715285602.

It is an arithmetic number, because the mean of its divisors is an integer number (128601715285602).

Almost surely, 2^{257203430571203} is an apocalyptic number.

257203430571203 is a deficient number, since it is larger than the sum of its proper divisors (1).

257203430571203 is an equidigital number, since it uses as much as digits as its factorization.

257203430571203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 44.

Adding to 257203430571203 its reverse (302175034302752), we get a palindrome (559378464873955).

The spelling of 257203430571203 in words is "two hundred fifty-seven trillion, two hundred three billion, four hundred thirty million, five hundred seventy-one thousand, two hundred three".