257026207056 has 20 divisors (see below), whose sum is σ = 663984368352. Its totient is φ = 85675402336.

The previous prime is 257026207051. The next prime is 257026207103. The reversal of 257026207056 is 650702620752.

It is a super-2 number, since 2×257026207056² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257026206999 and 257026207017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257026207051) 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 3 ways as a sum of consecutive naturals, for example, 2677356276 + ... + 2677356371.

Almost surely, 2^257026207056 is an apocalyptic number.

It is an amenable number.

257026207056 is an abundant number, since it is smaller than the sum of its proper divisors (406958161296).

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

257026207056 is a wasteful number, since it uses less digits than its factorization.

257026207056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354712658 (or 5354712652 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 257026207056 in words is "two hundred fifty-seven billion, twenty-six million, two hundred seven thousand, fifty-six".