1685185166680 has 16 divisors (see below), whose sum is σ = 3791666625120. Its totient is φ = 674074066656.

The previous prime is 1685185166633. The next prime is 1685185166719. The reversal of 1685185166680 is 866615815861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21064814544 + ... + 21064814623.

It is an arithmetic number, because the mean of its divisors is an integer number (236979164070).

Almost surely, 2^{1685185166680} is an apocalyptic number.

1685185166680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1685185166680 is an abundant number, since it is smaller than the sum of its proper divisors (2106481458440).

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

1685185166680 is a wasteful number, since it uses less digits than its factorization.

1685185166680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42129629178 (or 42129629174 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 61.

The spelling of 1685185166680 in words is "one trillion, six hundred eighty-five billion, one hundred eighty-five million, one hundred sixty-six thousand, six hundred eighty".