28343538566 has 16 divisors (see below), whose sum is σ = 48618644256. Its totient is φ = 12139800576.

The previous prime is 28343538521. The next prime is 28343538631. The reversal of 28343538566 is 66583534382.

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, 595451 + ... + 641286.

It is an arithmetic number, because the mean of its divisors is an integer number (3038665266).

Almost surely, 2^28343538566 is an apocalyptic number.

28343538566 is a deficient number, since it is larger than the sum of its proper divisors (20275105690).

28343538566 is a wasteful number, since it uses less digits than its factorization.

28343538566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238383.

The product of its digits is 12441600, while the sum is 53.

The spelling of 28343538566 in words is "twenty-eight billion, three hundred forty-three million, five hundred thirty-eight thousand, five hundred sixty-six".