257268113208271 has 4 divisors (see below), whose sum is σ = 280656123499944. Its totient is φ = 233880102916600.

The previous prime is 257268113208241. The next prime is 257268113208283. The reversal of 257268113208271 is 172802311862752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257268113208271 - 2²⁷ = 257267978990543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257268113208241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11694005145820 + ... + 11694005145841.

It is an arithmetic number, because the mean of its divisors is an integer number (70164030874986).

Almost surely, 2^{257268113208271} is an apocalyptic number.

257268113208271 is a deficient number, since it is larger than the sum of its proper divisors (23388010291673).

257268113208271 is a wasteful number, since it uses less digits than its factorization.

257268113208271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23388010291672.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 257268113208271 in words is "two hundred fifty-seven trillion, two hundred sixty-eight billion, one hundred thirteen million, two hundred eight thousand, two hundred seventy-one".