243694271716 has 81 divisors (see below), whose sum is σ = 510397744059. Its totient is φ = 101511059328.

The previous prime is 243694271713. The next prime is 243694271741. The reversal of 243694271716 is 617172496342.

It is a happy number.

The square root of 243694271716 is 493654.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 32057470116 + 211636801600 = 179046^2 + 460040^2 .

It is not an unprimeable number, because it can be changed into a prime (243694271713) 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 26 ways as a sum of consecutive naturals, for example, 255712296 + ... + 255713248.

Almost surely, 2^243694271716 is an apocalyptic number.

243694271716 is the 493654-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243694271716

243694271716 is an abundant number, since it is smaller than the sum of its proper divisors (266703472343).

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

243694271716 is an frugal number, since it uses more digits than its factorization.

243694271716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 999 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 52.

The spelling of 243694271716 in words is "two hundred forty-three billion, six hundred ninety-four million, two hundred seventy-one thousand, seven hundred sixteen".