2117985196848 has 40 divisors (see below), whose sum is σ = 5471733977088. Its totient is φ = 705959940672.

The previous prime is 2117985196841. The next prime is 2117985196909. The reversal of 2117985196848 is 8486915897112.

It is a happy number.

It is a super-2 number, since 2×2117985196848² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2117985196841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113736 + ... + 2061287.

Almost surely, 2^{2117985196848} is an apocalyptic number.

It is an amenable number.

2117985196848 is an abundant number, since it is smaller than the sum of its proper divisors (3353748780240).

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

2117985196848 is a wasteful number, since it uses less digits than its factorization.

2117985196848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195321 (or 2195315 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 69.

The spelling of 2117985196848 in words is "two trillion, one hundred seventeen billion, nine hundred eighty-five million, one hundred ninety-six thousand, eight hundred forty-eight".