285280550213 has 4 divisors (see below), whose sum is σ = 285572547660. Its totient is φ = 284988552768.

The previous prime is 285280550141. The next prime is 285280550231. The reversal of 285280550213 is 312055082582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 273485069764 + 11795480449 = 522958^2 + 108607^2 .

It is a cyclic number.

It is not a de Polignac number, because 285280550213 - 2³⁴ = 268100681029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285280550273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145997258 + ... + 145999211.

It is an arithmetic number, because the mean of its divisors is an integer number (71393136915).

Almost surely, 2^285280550213 is an apocalyptic number.

It is an amenable number.

285280550213 is a deficient number, since it is larger than the sum of its proper divisors (291997447).

285280550213 is an equidigital number, since it uses as much as digits as its factorization.

285280550213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291997446.

The product of its (nonzero) digits is 192000, while the sum is 41.

The spelling of 285280550213 in words is "two hundred eighty-five billion, two hundred eighty million, five hundred fifty thousand, two hundred thirteen".