1685168242506 has 24 divisors (see below), whose sum is σ = 4172797553184. Its totient is φ = 481476640680.

The previous prime is 1685168242453. The next prime is 1685168242517. The reversal of 1685168242506 is 6052428615861.

1685168242506 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 16 + 82 + 42 + 506 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6687175440 + ... + 6687175691.

It is an arithmetic number, because the mean of its divisors is an integer number (173866564716).

Almost surely, 2^{1685168242506} is an apocalyptic number.

1685168242506 is an abundant number, since it is smaller than the sum of its proper divisors (2487629310678).

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

1685168242506 is a wasteful number, since it uses less digits than its factorization.

1685168242506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13374351146 (or 13374351143 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 1685168242506 in words is "one trillion, six hundred eighty-five billion, one hundred sixty-eight million, two hundred forty-two thousand, five hundred six".