243784435377 has 16 divisors (see below), whose sum is σ = 374889130880. Its totient is φ = 138027359232.

The previous prime is 243784435319. The next prime is 243784435423. The reversal of 243784435377 is 773534487342.

243784435377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243784435377 - 2¹⁰ = 243784434353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243784435777) 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 15 ways as a sum of consecutive naturals, for example, 53249008 + ... + 53253585.

It is an arithmetic number, because the mean of its divisors is an integer number (23430570680).

Almost surely, 2^243784435377 is an apocalyptic number.

It is an amenable number.

243784435377 is a deficient number, since it is larger than the sum of its proper divisors (131104695503).

243784435377 is a wasteful number, since it uses less digits than its factorization.

243784435377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106502712.

The product of its digits is 47416320, while the sum is 57.

The spelling of 243784435377 in words is "two hundred forty-three billion, seven hundred eighty-four million, four hundred thirty-five thousand, three hundred seventy-seven".