257271531320 has 32 divisors (see below), whose sum is σ = 578897474400. Its totient is φ = 102902118528.

The previous prime is 257271531301. The next prime is 257271531353. The reversal of 257271531320 is 23135172752.

257271531320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466082 + ... + 855438.

It is an arithmetic number, because the mean of its divisors is an integer number (18090546075).

Almost surely, 2^257271531320 is an apocalyptic number.

257271531320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257271531320 is an abundant number, since it is smaller than the sum of its proper divisors (321625943080).

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

257271531320 is a wasteful number, since it uses less digits than its factorization.

257271531320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405887 (or 405883 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 257271531320 in words is "two hundred fifty-seven billion, two hundred seventy-one million, five hundred thirty-one thousand, three hundred twenty".