257638159032 has 32 divisors (see below), whose sum is σ = 644116087680. Its totient is φ = 85876627680.

The previous prime is 257638159007. The next prime is 257638159049. The reversal of 257638159032 is 230951836752.

It is a super-3 number, since 3×257638159032³ (a number of 35 digits) contains 333 as substring.

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, 675357 + ... + 985587.

It is an arithmetic number, because the mean of its divisors is an integer number (20128627740).

Almost surely, 2^257638159032 is an apocalyptic number.

It is an amenable number.

257638159032 is an abundant number, since it is smaller than the sum of its proper divisors (386477928648).

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

257638159032 is a wasteful number, since it uses less digits than its factorization.

257638159032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344843 (or 344839 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 257638159032 in words is "two hundred fifty-seven billion, six hundred thirty-eight million, one hundred fifty-nine thousand, thirty-two".