27868585265 has 16 divisors (see below), whose sum is σ = 35647160400. Its totient is φ = 20842567680.

The previous prime is 27868585253. The next prime is 27868585273. The reversal of 27868585265 is 56258586872.

It can be written as a sum of positive squares in 8 ways, for example, as 49014001 + 27819571264 = 7001^2 + 166792^2 .

It is not a de Polignac number, because 27868585265 - 2⁴ = 27868585249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27868585198 and 27868585207.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1087556 + ... + 1112885.

It is an arithmetic number, because the mean of its divisors is an integer number (2227947525).

Almost surely, 2^27868585265 is an apocalyptic number.

It is an amenable number.

27868585265 is a deficient number, since it is larger than the sum of its proper divisors (7778575135).

27868585265 is a wasteful number, since it uses less digits than its factorization.

27868585265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200612.

The product of its digits is 64512000, while the sum is 62.

The spelling of 27868585265 in words is "twenty-seven billion, eight hundred sixty-eight million, five hundred eighty-five thousand, two hundred sixty-five".