85335828869 has 2 divisors, whose sum is σ = 85335828870. Its totient is φ = 85335828868.

The previous prime is 85335828791. The next prime is 85335828901. The reversal of 85335828869 is 96882853358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85008399844 + 327429025 = 291562^2 + 18095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85335828869 is a prime.

It is a super-2 number, since 2×85335828869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85335828769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42667914434 + 42667914435.

It is an arithmetic number, because the mean of its divisors is an integer number (42667914435).

Almost surely, 2^85335828869 is an apocalyptic number.

It is an amenable number.

85335828869 is a deficient number, since it is larger than the sum of its proper divisors (1).

85335828869 is an equidigital number, since it uses as much as digits as its factorization.

85335828869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99532800, while the sum is 65.

The spelling of 85335828869 in words is "eighty-five billion, three hundred thirty-five million, eight hundred twenty-eight thousand, eight hundred sixty-nine".