257835453384 has 32 divisors (see below), whose sum is σ = 644828508000. Its totient is φ = 85913167872.

The previous prime is 257835453353. The next prime is 257835453401. The reversal of 257835453384 is 483354538752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933074 + ... + 2062145.

It is an arithmetic number, because the mean of its divisors is an integer number (20150890875).

Almost surely, 2^257835453384 is an apocalyptic number.

257835453384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

257835453384 is an abundant number, since it is smaller than the sum of its proper divisors (386993054616).

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

257835453384 is a wasteful number, since it uses less digits than its factorization.

257835453384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997917 (or 3997913 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 57.

The spelling of 257835453384 in words is "two hundred fifty-seven billion, eight hundred thirty-five million, four hundred fifty-three thousand, three hundred eighty-four".