257434318004 has 12 divisors (see below), whose sum is σ = 450585776004. Its totient is φ = 128695524864.

The previous prime is 257434317991. The next prime is 257434318007. The reversal of 257434318004 is 400813434752.

It can be written as a sum of positive squares in 2 ways, for example, as 67913402404 + 189520915600 = 260602^2 + 435340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257434318007) 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, 5381747 + ... + 5429370.

It is an arithmetic number, because the mean of its divisors is an integer number (37548814667).

Almost surely, 2^257434318004 is an apocalyptic number.

It is an amenable number.

257434318004 is a deficient number, since it is larger than the sum of its proper divisors (193151458000).

257434318004 is a wasteful number, since it uses less digits than its factorization.

257434318004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10817074 (or 10817072 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 257434318004 in words is "two hundred fifty-seven billion, four hundred thirty-four million, three hundred eighteen thousand, four".