28143025637140 has 12 divisors (see below), whose sum is σ = 59100353838036. Its totient is φ = 11257210254848.

The previous prime is 28143025637137. The next prime is 28143025637183. The reversal of 28143025637140 is 4173652034182.

It can be written as a sum of positive squares in 2 ways, for example, as 13943980778896 + 14199044858244 = 3734164^2 + 3768162^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703575640909 + ... + 703575640948.

It is an arithmetic number, because the mean of its divisors is an integer number (4925029486503).

Almost surely, 2^{28143025637140} is an apocalyptic number.

28143025637140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28143025637140 is an abundant number, since it is smaller than the sum of its proper divisors (30957328200896).

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

28143025637140 is a wasteful number, since it uses less digits than its factorization.

28143025637140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407151281866 (or 1407151281864 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 28143025637140 in words is "twenty-eight trillion, one hundred forty-three billion, twenty-five million, six hundred thirty-seven thousand, one hundred forty".