3806985599999 has 16 divisors (see below), whose sum is σ = 4012896729600. Its totient is φ = 3608164268544.

The previous prime is 3806985599933. The next prime is 3806985600071. The reversal of 3806985599999 is 9999955896083.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3806985599999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806985592999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10059554 + ... + 10431135.

It is an arithmetic number, because the mean of its divisors is an integer number (250806045600).

Almost surely, 2^{3806985599999} is an apocalyptic number.

3806985599999 is a deficient number, since it is larger than the sum of its proper divisors (205911129601).

3806985599999 is a wasteful number, since it uses less digits than its factorization.

3806985599999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20490862.

The product of its (nonzero) digits is 15305500800, while the sum is 89.

The spelling of 3806985599999 in words is "three trillion, eight hundred six billion, nine hundred eighty-five million, five hundred ninety-nine thousand, nine hundred ninety-nine".