28817873441585 has 16 divisors (see below), whose sum is σ = 34830577689600. Its totient is φ = 22888215639936.

The previous prime is 28817873441561. The next prime is 28817873441629. The reversal of 28817873441585 is 58514437871882.

It is a cyclic number.

It is not a de Polignac number, because 28817873441585 - 2²⁴ = 28817856664369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138657776 + ... + 138865454.

It is an arithmetic number, because the mean of its divisors is an integer number (2176911105600).

Almost surely, 2^{28817873441585} is an apocalyptic number.

It is an amenable number.

28817873441585 is a deficient number, since it is larger than the sum of its proper divisors (6012704248015).

28817873441585 is a wasteful number, since it uses less digits than its factorization.

28817873441585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407480.

The product of its digits is 481689600, while the sum is 71.

The spelling of 28817873441585 in words is "twenty-eight trillion, eight hundred seventeen billion, eight hundred seventy-three million, four hundred forty-one thousand, five hundred eighty-five".