985682086777 has 2 divisors, whose sum is σ = 985682086778. Its totient is φ = 985682086776.

The previous prime is 985682086759. The next prime is 985682086801. The reversal of 985682086777 is 777680286589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779766705936 + 205915380841 = 883044^2 + 453779^2 .

It is a cyclic number.

It is not a de Polignac number, because 985682086777 - 2¹⁵ = 985682054009 is a prime.

It is a super-2 number, since 2×985682086777² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (985682086877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492841043388 + 492841043389.

It is an arithmetic number, because the mean of its divisors is an integer number (492841043389).

Almost surely, 2^985682086777 is an apocalyptic number.

It is an amenable number.

985682086777 is a deficient number, since it is larger than the sum of its proper divisors (1).

985682086777 is an equidigital number, since it uses as much as digits as its factorization.

985682086777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 568995840, while the sum is 73.

The spelling of 985682086777 in words is "nine hundred eighty-five billion, six hundred eighty-two million, eighty-six thousand, seven hundred seventy-seven".