2178243428223 has 16 divisors (see below), whose sum is σ = 2909805866496. Its totient is φ = 1449424223520.

The previous prime is 2178243428203. The next prime is 2178243428243. The reversal of 2178243428223 is 3228243428712.

It is an interprime number because it is at equal distance from previous prime (2178243428203) and next prime (2178243428243).

It is not a de Polignac number, because 2178243428223 - 2¹⁷ = 2178243297151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178243428203) 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, 3058486 + ... + 3702812.

It is an arithmetic number, because the mean of its divisors is an integer number (181862866656).

Almost surely, 2^{2178243428223} is an apocalyptic number.

2178243428223 is a deficient number, since it is larger than the sum of its proper divisors (731562438273).

2178243428223 is a wasteful number, since it uses less digits than its factorization.

2178243428223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646454.

The product of its digits is 2064384, while the sum is 48.

The spelling of 2178243428223 in words is "two trillion, one hundred seventy-eight billion, two hundred forty-three million, four hundred twenty-eight thousand, two hundred twenty-three".