8285111721769 has 9 divisors (see below), whose sum is σ = 8410811531031. Its totient is φ = 8161263364320.

The previous prime is 8285111721751. The next prime is 8285111721793. The reversal of 8285111721769 is 9671271115828.

The square root of 8285111721769 is 2878387.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 900196771369 + 7384914950400 = 948787^2 + 2717520^2 .

It is not a de Polignac number, because 8285111721769 - 2¹³ = 8285111713577 is a prime.

It is a super-2 number, since 2×8285111721769² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8285111721169) 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 in 8 ways as a sum of consecutive naturals, for example, 192830449 + ... + 192873409.

It is an arithmetic number, because the mean of its divisors is an integer number (934534614559).

Almost surely, 2^{8285111721769} is an apocalyptic number.

8285111721769 is the 2878387-th square number.

8285111721769 is the 1439194-th centered octagonal number.

It is an amenable number.

8285111721769 is a deficient number, since it is larger than the sum of its proper divisors (125699809262).

8285111721769 is an frugal number, since it uses more digits than its factorization.

8285111721769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86056 (or 43028 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 58.

The spelling of 8285111721769 in words is "eight trillion, two hundred eighty-five billion, one hundred eleven million, seven hundred twenty-one thousand, seven hundred sixty-nine".