849785423616 has 576 divisors, whose sum is σ = 2652320563200. Its totient is φ = 268094582784.

The previous prime is 849785423581. The next prime is 849785423633. The reversal of 849785423616 is 616324587948.

849785423616 is a `hidden beast` number, since 8 + 4 + 9 + 7 + 8 + 5 + 4 + 2 + 3 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1774082065 + ... + 1774082543.

It is an arithmetic number, because the mean of its divisors is an integer number (4604723200).

Almost surely, 2^849785423616 is an apocalyptic number.

849785423616 is a gapful number since it is divisible by the number (86) 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 849785423616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326160281600).

849785423616 is an abundant number, since it is smaller than the sum of its proper divisors (1802535139584).

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

849785423616 is a wasteful number, since it uses less digits than its factorization.

849785423616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 701 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 849785423616 in words is "eight hundred forty-nine billion, seven hundred eighty-five million, four hundred twenty-three thousand, six hundred sixteen".