1028886008565 has 16 divisors (see below), whose sum is σ = 1646637982848. Its totient is φ = 548599081536.

The previous prime is 1028886008561. The next prime is 1028886008701. The reversal of 1028886008565 is 5658006888201.

It is a happy number.

It is not a de Polignac number, because 1028886008565 - 2² = 1028886008561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028886008561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8696977 + ... + 8814486.

It is an arithmetic number, because the mean of its divisors is an integer number (102914873928).

Almost surely, 2^{1028886008565} is an apocalyptic number.

1028886008565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1028886008565 is a deficient number, since it is larger than the sum of its proper divisors (617751974283).

1028886008565 is a wasteful number, since it uses less digits than its factorization.

1028886008565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17515388.

The product of its (nonzero) digits is 7372800, while the sum is 57.

The spelling of 1028886008565 in words is "one trillion, twenty-eight billion, eight hundred eighty-six million, eight thousand, five hundred sixty-five".