828069101989 has 2 divisors, whose sum is σ = 828069101990. Its totient is φ = 828069101988.

The previous prime is 828069101933. The next prime is 828069102041. The reversal of 828069101989 is 989101960828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657652877764 + 170416224225 = 810958^2 + 412815^2 .

It is a cyclic number.

It is not a de Polignac number, because 828069101989 - 2¹¹ = 828069099941 is a prime.

It is a super-2 number, since 2×828069101989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828069101089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414034550994 + 414034550995.

It is an arithmetic number, because the mean of its divisors is an integer number (414034550995).

Almost surely, 2^828069101989 is an apocalyptic number.

It is an amenable number.

828069101989 is a deficient number, since it is larger than the sum of its proper divisors (1).

828069101989 is an equidigital number, since it uses as much as digits as its factorization.

828069101989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 61.

The spelling of 828069101989 in words is "eight hundred twenty-eight billion, sixty-nine million, one hundred one thousand, nine hundred eighty-nine".