2181173124468 has 24 divisors (see below), whose sum is σ = 5480896569568. Its totient is φ = 671130192096.

The previous prime is 2181173124419. The next prime is 2181173124491. The reversal of 2181173124468 is 8644213711812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6990939346 + ... + 6990939657.

Almost surely, 2^{2181173124468} is an apocalyptic number.

It is an amenable number.

2181173124468 is an abundant number, since it is smaller than the sum of its proper divisors (3299723445100).

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

2181173124468 is a wasteful number, since it uses less digits than its factorization.

2181173124468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13981879023 (or 13981879021 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The spelling of 2181173124468 in words is "two trillion, one hundred eighty-one billion, one hundred seventy-three million, one hundred twenty-four thousand, four hundred sixty-eight".