28531085266 has 16 divisors (see below), whose sum is σ = 42971342400. Its totient is φ = 14207343568.

The previous prime is 28531085243. The next prime is 28531085291. The reversal of 28531085266 is 66258013582.

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 7 ways as a sum of consecutive naturals, for example, 1779795 + ... + 1795753.

It is an arithmetic number, because the mean of its divisors is an integer number (2685708900).

Almost surely, 2^28531085266 is an apocalyptic number.

28531085266 is a deficient number, since it is larger than the sum of its proper divisors (14440257134).

28531085266 is a wasteful number, since it uses less digits than its factorization.

28531085266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19553.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 28531085266 in words is "twenty-eight billion, five hundred thirty-one million, eighty-five thousand, two hundred sixty-six".