28056565327893 has 24 divisors (see below), whose sum is σ = 39924444955680. Its totient is φ = 17477196958080.

The previous prime is 28056565327859. The next prime is 28056565327907. The reversal of 28056565327893 is 39872356565082.

It is not a de Polignac number, because 28056565327893 - 2¹² = 28056565323797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056565327793) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 45879438 + ... + 46486943.

It is an arithmetic number, because the mean of its divisors is an integer number (1663518539820).

Almost surely, 2^{28056565327893} is an apocalyptic number.

It is an amenable number.

28056565327893 is a deficient number, since it is larger than the sum of its proper divisors (11867879627787).

28056565327893 is an equidigital number, since it uses as much as digits as its factorization.

28056565327893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92366549 (or 92366476 counting only the distinct ones).

The product of its (nonzero) digits is 653184000, while the sum is 69.

The spelling of 28056565327893 in words is "twenty-eight trillion, fifty-six billion, five hundred sixty-five million, three hundred twenty-seven thousand, eight hundred ninety-three".