257046135116656 has 40 divisors (see below), whose sum is σ = 499023820431360. Its totient is φ = 128265801352896.

The previous prime is 257046135116627. The next prime is 257046135116713. The reversal of 257046135116656 is 656611531640752.

It is a self number, because there is not a number n which added to its sum of digits gives 257046135116656.

It is a congruent number.

It is an unprimeable number.

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, 747962241 + ... + 748305823.

It is an arithmetic number, because the mean of its divisors is an integer number (12475595510784).

Almost surely, 2^{257046135116656} is an apocalyptic number.

It is an amenable number.

257046135116656 is a deficient number, since it is larger than the sum of its proper divisors (241977685314704).

257046135116656 is a wasteful number, since it uses less digits than its factorization.

257046135116656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437053 (or 437047 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 58.

The spelling of 257046135116656 in words is "two hundred fifty-seven trillion, forty-six billion, one hundred thirty-five million, one hundred sixteen thousand, six hundred fifty-six".