1685606125823 has 32 divisors (see below), whose sum is σ = 1832515781184. Its totient is φ = 1544262838272.

The previous prime is 1685606125817. The next prime is 1685606125829. The reversal of 1685606125823 is 3285216065861.

It is an interprime number because it is at equal distance from previous prime (1685606125817) and next prime (1685606125829).

It is a cyclic number.

It is not a de Polignac number, because 1685606125823 - 2³⁶ = 1616886649087 is a prime.

It is a super-2 number, since 2×1685606125823² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685606125829) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 463458761 + ... + 463462397.

It is an arithmetic number, because the mean of its divisors is an integer number (57266118162).

Almost surely, 2^{1685606125823} is an apocalyptic number.

1685606125823 is a deficient number, since it is larger than the sum of its proper divisors (146909655361).

1685606125823 is a wasteful number, since it uses less digits than its factorization.

1685606125823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691.

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 1685606125823 in words is "one trillion, six hundred eighty-five billion, six hundred six million, one hundred twenty-five thousand, eight hundred twenty-three".