2111168509844 has 24 divisors (see below), whose sum is σ = 3978173969280. Its totient is φ = 976652230016.

The previous prime is 2111168509831. The next prime is 2111168509867. The reversal of 2111168509844 is 4489058611112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2111168509792 and 2111168509801.

It is a congruent number.

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, 263102732 + ... + 263110755.

It is an arithmetic number, because the mean of its divisors is an integer number (165757248720).

Almost surely, 2^{2111168509844} is an apocalyptic number.

It is an amenable number.

2111168509844 is a deficient number, since it is larger than the sum of its proper divisors (1867005459436).

2111168509844 is a wasteful number, since it uses less digits than its factorization.

2111168509844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526213567 (or 526213565 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 50.

The spelling of 2111168509844 in words is "two trillion, one hundred eleven billion, one hundred sixty-eight million, five hundred nine thousand, eight hundred forty-four".