28285543143 has 256 divisors, whose sum is σ = 56444774400. Its totient is φ = 13705666560.

The previous prime is 28285543123. The next prime is 28285543151. The reversal of 28285543143 is 34134558282.

28285543143 is a `hidden beast` number, since 2 + 8 + 28 + 554 + 31 + 43 = 666.

It is not a de Polignac number, because 28285543143 - 2¹⁸ = 28285280999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285543123) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 46142505 + ... + 46143117.

It is an arithmetic number, because the mean of its divisors is an integer number (220487400).

Almost surely, 2^28285543143 is an apocalyptic number.

28285543143 is a deficient number, since it is larger than the sum of its proper divisors (28159231257).

28285543143 is a wasteful number, since it uses less digits than its factorization.

28285543143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 713 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 28285543143 in words is "twenty-eight billion, two hundred eighty-five million, five hundred forty-three thousand, one hundred forty-three".