85858585858584 has 320 divisors, whose sum is σ = 299950500960000. Its totient is φ = 22291494969600.

The previous prime is 85858585858583. The next prime is 85858585858597. The reversal of 85858585858584 is 48585858585858.

It is a junction number, because it is equal to n+sod(n) for n = 85858585858494 and 85858585858503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85858585858583) 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 in 79 ways as a sum of consecutive naturals, for example, 117940542 + ... + 118666290.

It is an arithmetic number, because the mean of its divisors is an integer number (937345315500).

Almost surely, 2^{85858585858584} is an apocalyptic number.

85858585858584 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85858585858584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149975250480000).

85858585858584 is an abundant number, since it is smaller than the sum of its proper divisors (214091915101416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85858585858584 is a wasteful number, since it uses less digits than its factorization.

85858585858584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728156 (or 728143 counting only the distinct ones).

The product of its digits is 131072000000, while the sum is 90.

The spelling of 85858585858584 in words is "eighty-five trillion, eight hundred fifty-eight billion, five hundred eighty-five million, eight hundred fifty-eight thousand, five hundred eighty-four".