257489795411 has 4 divisors (see below), whose sum is σ = 263477930232. Its totient is φ = 251501660592.

The previous prime is 257489795393. The next prime is 257489795417. The reversal of 257489795411 is 114597984752.

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 257489795411 - 2⁶ = 257489795347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257489795417) 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, 2994067346 + ... + 2994067431.

It is an arithmetic number, because the mean of its divisors is an integer number (65869482558).

Almost surely, 2^257489795411 is an apocalyptic number.

257489795411 is a deficient number, since it is larger than the sum of its proper divisors (5988134821).

257489795411 is an equidigital number, since it uses as much as digits as its factorization.

257489795411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988134820.

The product of its digits is 25401600, while the sum is 62.

The spelling of 257489795411 in words is "two hundred fifty-seven billion, four hundred eighty-nine million, seven hundred ninety-five thousand, four hundred eleven".