1685323240000 has 105 divisors (see below), whose sum is σ = 4179697827151. Its totient is φ = 674025440000.

The previous prime is 1685323239979. The next prime is 1685323240067. The reversal of 1685323240000 is 423235861.

The square root of 1685323240000 is 1298200.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 132129342016 + 1553193897984 = 363496^2 + 1246272^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 259636755 + ... + 259643245.

Almost surely, 2^{1685323240000} is an apocalyptic number.

1685323240000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1685323240000 is the 1298200-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1685323240000

1685323240000 is an abundant number, since it is smaller than the sum of its proper divisors (2494374587151).

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

1685323240000 is an frugal number, since it uses more digits than its factorization.

1685323240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13014 (or 6498 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 1685323240000 its reverse (423235861), we get a palindrome (1685746475861).

The spelling of 1685323240000 in words is "one trillion, six hundred eighty-five billion, three hundred twenty-three million, two hundred forty thousand".