257386883678 has 16 divisors (see below), whose sum is σ = 407891177280. Its totient is φ = 121611996576.

The previous prime is 257386883671. The next prime is 257386883681. The reversal of 257386883678 is 876388683752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257386883671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47206901 + ... + 47212352.

It is an arithmetic number, because the mean of its divisors is an integer number (25493198580).

Almost surely, 2^257386883678 is an apocalyptic number.

257386883678 is a deficient number, since it is larger than the sum of its proper divisors (150504293602).

257386883678 is a wasteful number, since it uses less digits than its factorization.

257386883678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94419331.

The product of its digits is 650280960, while the sum is 71.

The spelling of 257386883678 in words is "two hundred fifty-seven billion, three hundred eighty-six million, eight hundred eighty-three thousand, six hundred seventy-eight".