28536618525587 has 16 divisors (see below), whose sum is σ = 29506616348352. Its totient is φ = 27577707171840.

The previous prime is 28536618525563. The next prime is 28536618525641. The reversal of 28536618525587 is 78552581663582.

It is a cyclic number.

It is not a de Polignac number, because 28536618525587 - 2¹⁸ = 28536618263443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28536618525587.

It is not an unprimeable number, because it can be changed into a prime (28536618525517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071614 + ... + 7630307.

It is an arithmetic number, because the mean of its divisors is an integer number (1844163521772).

Almost surely, 2^{28536618525587} is an apocalyptic number.

28536618525587 is a deficient number, since it is larger than the sum of its proper divisors (969997822765).

28536618525587 is a wasteful number, since it uses less digits than its factorization.

28536618525587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8702558.

The product of its digits is 967680000, while the sum is 71.

The spelling of 28536618525587 in words is "twenty-eight trillion, five hundred thirty-six billion, six hundred eighteen million, five hundred twenty-five thousand, five hundred eighty-seven".