257933655141 has 4 divisors (see below), whose sum is σ = 343911540192. Its totient is φ = 171955770092.

The previous prime is 257933655139. The next prime is 257933655151. The reversal of 257933655141 is 141556339752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 257933655141 - 2¹ = 257933655139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257933655151) 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, 42988942521 + ... + 42988942526.

It is an arithmetic number, because the mean of its divisors is an integer number (85977885048).

Almost surely, 2^257933655141 is an apocalyptic number.

It is an amenable number.

257933655141 is a deficient number, since it is larger than the sum of its proper divisors (85977885051).

257933655141 is an equidigital number, since it uses as much as digits as its factorization.

257933655141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85977885050.

The product of its digits is 3402000, while the sum is 51.

The spelling of 257933655141 in words is "two hundred fifty-seven billion, nine hundred thirty-three million, six hundred fifty-five thousand, one hundred forty-one".