1685386117896 has 32 divisors (see below), whose sum is σ = 4537578010560. Its totient is φ = 518580343872.

The previous prime is 1685386117867. The next prime is 1685386117901. The reversal of 1685386117896 is 6987116835861.

It is a super-2 number, since 2×1685386117896² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1685386117896.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700938980 + ... + 2700939603.

It is an arithmetic number, because the mean of its divisors is an integer number (141799312830).

Almost surely, 2^{1685386117896} is an apocalyptic number.

It is an amenable number.

1685386117896 is an abundant number, since it is smaller than the sum of its proper divisors (2852191892664).

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

1685386117896 is a wasteful number, since it uses less digits than its factorization.

1685386117896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401878605 (or 5401878601 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 69.

The spelling of 1685386117896 in words is "one trillion, six hundred eighty-five billion, three hundred eighty-six million, one hundred seventeen thousand, eight hundred ninety-six".