285643560929 has 2 divisors, whose sum is σ = 285643560930. Its totient is φ = 285643560928.

The previous prime is 285643560901. The next prime is 285643560949. The reversal of 285643560929 is 929065346582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285626113600 + 17447329 = 534440^2 + 4177^2 .

It is a cyclic number.

It is not a de Polignac number, because 285643560929 - 2¹² = 285643556833 is a prime.

It is not a weakly prime, because it can be changed into another prime (285643560949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142821780464 + 142821780465.

It is an arithmetic number, because the mean of its divisors is an integer number (142821780465).

Almost surely, 2^285643560929 is an apocalyptic number.

It is an amenable number.

285643560929 is a deficient number, since it is larger than the sum of its proper divisors (1).

285643560929 is an equidigital number, since it uses as much as digits as its factorization.

285643560929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 285643560929 in words is "two hundred eighty-five billion, six hundred forty-three million, five hundred sixty thousand, nine hundred twenty-nine".