243906842223 has 112 divisors (see below), whose sum is σ = 407552103936. Its totient is φ = 144645808320.

The previous prime is 243906842197. The next prime is 243906842317. The reversal of 243906842223 is 322248609342.

243906842223 is a `hidden beast` number, since 243 + 90 + 68 + 42 + 223 = 666.

It is not a de Polignac number, because 243906842223 - 2¹⁷ = 243906711151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243906842623) by changing a digit.

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 111 ways as a sum of consecutive naturals, for example, 274979086 + ... + 274979972.

Almost surely, 2^243906842223 is an apocalyptic number.

243906842223 is a deficient number, since it is larger than the sum of its proper divisors (163645261713).

243906842223 is an equidigital number, since it uses as much as digits as its factorization.

243906842223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The spelling of 243906842223 in words is "two hundred forty-three billion, nine hundred six million, eight hundred forty-two thousand, two hundred twenty-three".