285643560941 has 4 divisors (see below), whose sum is σ = 285665616000. Its totient is φ = 285621505884.

The previous prime is 285643560929. The next prime is 285643560949. The reversal of 285643560941 is 149065346582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 285643560941 - 2³⁴ = 268463691757 is a prime.

It is a super-3 number, since 3×285643560941³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285643560949) 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, 11008091 + ... + 11034008.

It is an arithmetic number, because the mean of its divisors is an integer number (71416404000).

Almost surely, 2^285643560941 is an apocalyptic number.

It is an amenable number.

285643560941 is a deficient number, since it is larger than the sum of its proper divisors (22055059).

285643560941 is a wasteful number, since it uses less digits than its factorization.

285643560941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22055058.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 285643560941 in words is "two hundred eighty-five billion, six hundred forty-three million, five hundred sixty thousand, nine hundred forty-one".