257033568378 has 32 divisors (see below), whose sum is σ = 533228008896. Its totient is φ = 82538967168.

The previous prime is 257033568377. The next prime is 257033568383. The reversal of 257033568378 is 873865330752.

It is not an unprimeable number, because it can be changed into a prime (257033568377) 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, 6804825 + ... + 6842492.

It is an arithmetic number, because the mean of its divisors is an integer number (16663375278).

Almost surely, 2^257033568378 is an apocalyptic number.

257033568378 is an abundant number, since it is smaller than the sum of its proper divisors (276194440518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257033568378 is a wasteful number, since it uses less digits than its factorization.

257033568378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13647438.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 257033568378 in words is "two hundred fifty-seven billion, thirty-three million, five hundred sixty-eight thousand, three hundred seventy-eight".