257917238342 has 16 divisors (see below), whose sum is σ = 392200956672. Its totient is φ = 127183815360.

The previous prime is 257917238339. The next prime is 257917238347. The reversal of 257917238342 is 243832719752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257917238347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2633492 + ... + 2729672.

It is an arithmetic number, because the mean of its divisors is an integer number (24512559792).

Almost surely, 2^257917238342 is an apocalyptic number.

257917238342 is a deficient number, since it is larger than the sum of its proper divisors (134283718330).

257917238342 is a wasteful number, since it uses less digits than its factorization.

257917238342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114623.

The product of its digits is 5080320, while the sum is 53.

The spelling of 257917238342 in words is "two hundred fifty-seven billion, nine hundred seventeen million, two hundred thirty-eight thousand, three hundred forty-two".