257896666383 has 16 divisors (see below), whose sum is σ = 367894012800. Its totient is φ = 160211904480.

The previous prime is 257896666373. The next prime is 257896666481. The reversal of 257896666383 is 383666698752.

It is not a de Polignac number, because 257896666383 - 2⁴ = 257896666367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257896666373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37082613 + ... + 37089566.

It is an arithmetic number, because the mean of its divisors is an integer number (22993375800).

Almost surely, 2^257896666383 is an apocalyptic number.

257896666383 is a deficient number, since it is larger than the sum of its proper divisors (109997346417).

257896666383 is a wasteful number, since it uses less digits than its factorization.

257896666383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74172262.

The product of its digits is 470292480, while the sum is 69.

The spelling of 257896666383 in words is "two hundred fifty-seven billion, eight hundred ninety-six million, six hundred sixty-six thousand, three hundred eighty-three".