257343118430 has 32 divisors (see below), whose sum is σ = 471651919200. Its totient is φ = 101067277312.

The previous prime is 257343118379. The next prime is 257343118433. The reversal of 257343118430 is 34811343752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257343118433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207734 + ... + 746886.

It is an arithmetic number, because the mean of its divisors is an integer number (14739122475).

Almost surely, 2^257343118430 is an apocalyptic number.

257343118430 is a deficient number, since it is larger than the sum of its proper divisors (214308800770).

257343118430 is a wasteful number, since it uses less digits than its factorization.

257343118430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540028.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 257343118430 in words is "two hundred fifty-seven billion, three hundred forty-three million, one hundred eighteen thousand, four hundred thirty".