1685385212160 has 1152 divisors, whose sum is σ = 6291655695360. Its totient is φ = 381186736128.

The previous prime is 1685385212141. The next prime is 1685385212213. The reversal of 1685385212160 is 612125835861.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4120746036 + ... + 4120746444.

It is an arithmetic number, because the mean of its divisors is an integer number (5461506680).

Almost surely, 2^{1685385212160} is an apocalyptic number.

1685385212160 is a gapful number since it is divisible by the number (10) 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 1685385212160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3145827847680).

1685385212160 is an abundant number, since it is smaller than the sum of its proper divisors (4606270483200).

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

1685385212160 is a wasteful number, since it uses less digits than its factorization.

1685385212160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 1685385212160 in words is "one trillion, six hundred eighty-five billion, three hundred eighty-five million, two hundred twelve thousand, one hundred sixty".