1685560866048 has 360 divisors, whose sum is σ = 5365169853120. Its totient is φ = 524776734720.

The previous prime is 1685560865969. The next prime is 1685560866049. The reversal of 1685560866048 is 8406680655861.

1685560866048 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 560 + 8 + 6 + 60 + 4 + 8 = 666.

It is a super-2 number, since 2×1685560866048² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685560866049) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27942736 + ... + 28002992.

It is an arithmetic number, because the mean of its divisors is an integer number (14903249592).

Almost surely, 2^{1685560866048} is an apocalyptic number.

1685560866048 is a gapful number since it is divisible by the number (18) 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 1685560866048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2682584926560).

1685560866048 is an abundant number, since it is smaller than the sum of its proper divisors (3679608987072).

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

1685560866048 is an equidigital number, since it uses as much as digits as its factorization.

1685560866048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60375 (or 60352 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 63.

The spelling of 1685560866048 in words is "one trillion, six hundred eighty-five billion, five hundred sixty million, eight hundred sixty-six thousand, forty-eight".