257896666382 has 8 divisors (see below), whose sum is σ = 389308980936. Its totient is φ = 128127006072.

The previous prime is 257896666373. The next prime is 257896666481. The reversal of 257896666382 is 283666698752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410663168 + ... + 410663795.

It is an arithmetic number, because the mean of its divisors is an integer number (48663622617).

Almost surely, 2^257896666382 is an apocalyptic number.

257896666382 is a deficient number, since it is larger than the sum of its proper divisors (131412314554).

257896666382 is a wasteful number, since it uses less digits than its factorization.

257896666382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821327122.

The product of its digits is 313528320, while the sum is 68.

The spelling of 257896666382 in words is "two hundred fifty-seven billion, eight hundred ninety-six million, six hundred sixty-six thousand, three hundred eighty-two".