28039783505243 has 16 divisors (see below), whose sum is σ = 28127390250240. Its totient is φ = 27952336591200.

The previous prime is 28039783505213. The next prime is 28039783505267. The reversal of 28039783505243 is 34250538793082.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28039783505243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28039783505213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2051334413 + ... + 2051348081.

It is an arithmetic number, because the mean of its divisors is an integer number (1757961890640).

Almost surely, 2^{28039783505243} is an apocalyptic number.

28039783505243 is a deficient number, since it is larger than the sum of its proper divisors (87606744997).

28039783505243 is a wasteful number, since it uses less digits than its factorization.

28039783505243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19058.

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 28039783505243 in words is "twenty-eight trillion, thirty-nine billion, seven hundred eighty-three million, five hundred five thousand, two hundred forty-three".