285211038773 has 2 divisors, whose sum is σ = 285211038774. Its totient is φ = 285211038772.

The previous prime is 285211038769. The next prime is 285211038811. The reversal of 285211038773 is 377830112582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283388004964 + 1823033809 = 532342^2 + 42697^2 .

It is a cyclic number.

It is not a de Polignac number, because 285211038773 - 2² = 285211038769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285211038713) 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, 142605519386 + 142605519387.

It is an arithmetic number, because the mean of its divisors is an integer number (142605519387).

Almost surely, 2^285211038773 is an apocalyptic number.

It is an amenable number.

285211038773 is a deficient number, since it is larger than the sum of its proper divisors (1).

285211038773 is an equidigital number, since it uses as much as digits as its factorization.

285211038773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 285211038773 in words is "two hundred eighty-five billion, two hundred eleven million, thirty-eight thousand, seven hundred seventy-three".