285211038769 has 2 divisors, whose sum is σ = 285211038770. Its totient is φ = 285211038768.

The previous prime is 285211038767. The next prime is 285211038773. The reversal of 285211038769 is 967830112582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254633270544 + 30577768225 = 504612^2 + 174865^2 .

It is a cyclic number.

It is not a de Polignac number, because 285211038769 - 2¹ = 285211038767 is a prime.

It is a super-2 number, since 2×285211038769² (a number of 24 digits) contains 22 as substring.

Together with 285211038767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (285211038767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142605519384 + 142605519385.

It is an arithmetic number, because the mean of its divisors is an integer number (142605519385).

Almost surely, 2^285211038769 is an apocalyptic number.

It is an amenable number.

285211038769 is a deficient number, since it is larger than the sum of its proper divisors (1).

285211038769 is an equidigital number, since it uses as much as digits as its factorization.

285211038769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 285211038769 in words is "two hundred eighty-five billion, two hundred eleven million, thirty-eight thousand, seven hundred sixty-nine".