28642382566 has 16 divisors (see below), whose sum is σ = 49172302080. Its totient is φ = 12257538120.

The previous prime is 28642382551. The next prime is 28642382581. The reversal of 28642382566 is 66528324682.

It is an interprime number because it is at equal distance from previous prime (28642382551) and next prime (28642382581).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1470706 + ... + 1490053.

It is an arithmetic number, because the mean of its divisors is an integer number (3073268880).

Almost surely, 2^28642382566 is an apocalyptic number.

28642382566 is a deficient number, since it is larger than the sum of its proper divisors (20529919514).

28642382566 is a wasteful number, since it uses less digits than its factorization.

28642382566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961459.

The product of its digits is 6635520, while the sum is 52.

The spelling of 28642382566 in words is "twenty-eight billion, six hundred forty-two million, three hundred eighty-two thousand, five hundred sixty-six".