285643560942 has 16 divisors (see below), whose sum is σ = 634763468880. Its totient is φ = 95214520296.

The previous prime is 285643560929. The next prime is 285643560949. The reversal of 285643560942 is 249065346582.

285643560942 is a `hidden beast` number, since 2 + 8 + 564 + 35 + 6 + 0 + 9 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 5289695573 = 285643560942 / (2 + 8 + 5 + 6 + 4 + 3 + 5 + 6 + 0 + 9 + 4 + 2).

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 7 ways as a sum of consecutive naturals, for example, 2644847733 + ... + 2644847840.

It is an arithmetic number, because the mean of its divisors is an integer number (39672716805).

Almost surely, 2^285643560942 is an apocalyptic number.

285643560942 is an abundant number, since it is smaller than the sum of its proper divisors (349119907938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285643560942 is a wasteful number, since it uses less digits than its factorization.

285643560942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289695584 (or 5289695578 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 285643560942 in words is "two hundred eighty-five billion, six hundred forty-three million, five hundred sixty thousand, nine hundred forty-two".