253543876728 has 32 divisors (see below), whose sum is σ = 634958270160. Its totient is φ = 84368148480.

The previous prime is 253543876709. The next prime is 253543876739. The reversal of 253543876728 is 827678345352.

It is a congruent number.

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, 9140683 + ... + 9168378.

Almost surely, 2^253543876728 is an apocalyptic number.

It is an amenable number.

253543876728 is an abundant number, since it is smaller than the sum of its proper divisors (381414393432).

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

253543876728 is a wasteful number, since it uses less digits than its factorization.

253543876728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18309647 (or 18309643 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 60.

The spelling of 253543876728 in words is "two hundred fifty-three billion, five hundred forty-three million, eight hundred seventy-six thousand, seven hundred twenty-eight".