285407560561 has 8 divisors (see below), whose sum is σ = 310363707240. Its totient is φ = 261358910208.

The previous prime is 285407560541. The next prime is 285407560567. The reversal of 285407560561 is 165065704582.

It can be written as a sum of positive squares in 4 ways, for example, as 196532622400 + 88874938161 = 443320^2 + 298119^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 285407560561 - 2¹⁵ = 285407527793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285407560567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226873426 + ... + 226874683.

It is an arithmetic number, because the mean of its divisors is an integer number (38795463405).

Almost surely, 2^285407560561 is an apocalyptic number.

It is an amenable number.

285407560561 is a deficient number, since it is larger than the sum of its proper divisors (24956146679).

285407560561 is a wasteful number, since it uses less digits than its factorization.

285407560561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453748163.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 285407560561 in words is "two hundred eighty-five billion, four hundred seven million, five hundred sixty thousand, five hundred sixty-one".