561027865285 has 8 divisors (see below), whose sum is σ = 674693817336. Its totient is φ = 447848706240.

The previous prime is 561027865267. The next prime is 561027865291. The reversal of 561027865285 is 582568720165.

It can be written as a sum of positive squares in 4 ways, for example, as 18387902404 + 542639962881 = 135602^2 + 736641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561027865285 - 2⁷ = 561027865157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121695714 + ... + 121700323.

It is an arithmetic number, because the mean of its divisors is an integer number (84336727167).

Almost surely, 2^561027865285 is an apocalyptic number.

It is an amenable number.

561027865285 is a deficient number, since it is larger than the sum of its proper divisors (113665952051).

561027865285 is a wasteful number, since it uses less digits than its factorization.

561027865285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243396503.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 561027865285 in words is "five hundred sixty-one billion, twenty-seven million, eight hundred sixty-five thousand, two hundred eighty-five".