257143078830 has 32 divisors (see below), whose sum is σ = 673247334528. Its totient is φ = 62337716000.

The previous prime is 257143078813. The next prime is 257143078861. The reversal of 257143078830 is 38870341752.

257143078830 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×257143078830² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257143078830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389610396 + ... + 389611055.

It is an arithmetic number, because the mean of its divisors is an integer number (21038979204).

Almost surely, 2^257143078830 is an apocalyptic number.

257143078830 is an abundant number, since it is smaller than the sum of its proper divisors (416104255698).

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

257143078830 is a wasteful number, since it uses less digits than its factorization.

257143078830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779221472.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 257143078830 in words is "two hundred fifty-seven billion, one hundred forty-three million, seventy-eight thousand, eight hundred thirty".