28285106566 has 32 divisors (see below), whose sum is σ = 47874032640. Its totient is φ = 12461006976.

The previous prime is 28285106539. The next prime is 28285106627. The reversal of 28285106566 is 66560158282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348036 + ... + 421543.

It is an arithmetic number, because the mean of its divisors is an integer number (1496063520).

Almost surely, 2^28285106566 is an apocalyptic number.

28285106566 is a deficient number, since it is larger than the sum of its proper divisors (19588926074).

28285106566 is a wasteful number, since it uses less digits than its factorization.

28285106566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769668.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 28285106566 in words is "twenty-eight billion, two hundred eighty-five million, one hundred six thousand, five hundred sixty-six".