28817163865 has 32 divisors (see below), whose sum is σ = 42449760000. Its totient is φ = 18720301824.

The previous prime is 28817163853. The next prime is 28817163883. The reversal of 28817163865 is 56836171882.

It is not a de Polignac number, because 28817163865 - 2⁵ = 28817163833 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 409600 + ... + 474769.

It is an arithmetic number, because the mean of its divisors is an integer number (1326555000).

Almost surely, 2^28817163865 is an apocalyptic number.

It is an amenable number.

28817163865 is a deficient number, since it is larger than the sum of its proper divisors (13632596135).

28817163865 is an equidigital number, since it uses as much as digits as its factorization.

28817163865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884414 (or 884400 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The spelling of 28817163865 in words is "twenty-eight billion, eight hundred seventeen million, one hundred sixty-three thousand, eight hundred sixty-five".