1685353685000 has 40 divisors (see below), whose sum is σ = 3948783695670. Its totient is φ = 674141472000.

The previous prime is 1685353684997. The next prime is 1685353685023. The reversal of 1685353685000 is 5863535861.

It can be written as a sum of positive squares in 5 ways, for example, as 5328124036 + 1680025560964 = 72994^2 + 1296158^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 1685353685000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 168530369 + ... + 168540368.

Almost surely, 2^{1685353685000} is an apocalyptic number.

1685353685000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1685353685000 is an abundant number, since it is smaller than the sum of its proper divisors (2263430010670).

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

1685353685000 is an equidigital number, since it uses as much as digits as its factorization.

1685353685000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337070763 (or 337070744 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 50.

The spelling of 1685353685000 in words is "one trillion, six hundred eighty-five billion, three hundred fifty-three million, six hundred eighty-five thousand".