2085683808899 has 4 divisors (see below), whose sum is σ = 2085905393136. Its totient is φ = 2085462224664.

The previous prime is 2085683808881. The next prime is 2085683808907. The reversal of 2085683808899 is 9988083865802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2085683808899 - 2²⁰ = 2085682760323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2085683808499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110777999 + ... + 110796824.

It is an arithmetic number, because the mean of its divisors is an integer number (521476348284).

Almost surely, 2^{2085683808899} is an apocalyptic number.

2085683808899 is a deficient number, since it is larger than the sum of its proper divisors (221584237).

2085683808899 is an equidigital number, since it uses as much as digits as its factorization.

2085683808899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221584236.

The product of its (nonzero) digits is 477757440, while the sum is 74.

The spelling of 2085683808899 in words is "two trillion, eighty-five billion, six hundred eighty-three million, eight hundred eight thousand, eight hundred ninety-nine".