257845813005 has 96 divisors (see below), whose sum is σ = 478923654528. Its totient is φ = 117456998400.

The previous prime is 257845812989. The next prime is 257845813007. The reversal of 257845813005 is 500318548752.

It is not a de Polignac number, because 257845813005 - 2⁴ = 257845812989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257845813007) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29226495 + ... + 29235315.

It is an arithmetic number, because the mean of its divisors is an integer number (4988788068).

Almost surely, 2^257845813005 is an apocalyptic number.

It is an amenable number.

257845813005 is a deficient number, since it is larger than the sum of its proper divisors (221077841523).

257845813005 is a wasteful number, since it uses less digits than its factorization.

257845813005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9487 (or 9470 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 257845813005 in words is "two hundred fifty-seven billion, eight hundred forty-five million, eight hundred thirteen thousand, five".