257952072344 has 8 divisors (see below), whose sum is σ = 483660135660. Its totient is φ = 128976036168.

The previous prime is 257952072341. The next prime is 257952072379. The reversal of 257952072344 is 443270259752.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 257952072292 and 257952072301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257952072341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16122004514 + ... + 16122004529.

Almost surely, 2^257952072344 is an apocalyptic number.

It is an amenable number.

257952072344 is a deficient number, since it is larger than the sum of its proper divisors (225708063316).

257952072344 is a wasteful number, since it uses less digits than its factorization.

257952072344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32244009049 (or 32244009045 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 257952072344 in words is "two hundred fifty-seven billion, nine hundred fifty-two million, seventy-two thousand, three hundred forty-four".