243228015648 has 126 divisors (see below), whose sum is σ = 718176715389. Its totient is φ = 81050896512.

The previous prime is 243228015647. The next prime is 243228015649. The reversal of 243228015648 is 846510822342.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

243228015648 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 2 + 80 + 1 + 564 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (243228015647) and next prime (243228015649).

It can be written as a sum of positive squares in 2 ways, for example, as 233161505424 + 10066510224 = 482868^2 + 100332^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=348732.

It is a super-3 number, since 3×243228015648³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (243228015643) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 75324498 + ... + 75327726.

Almost surely, 2^243228015648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243228015648

243228015648 is an abundant number, since it is smaller than the sum of its proper divisors (474948699741).

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

243228015648 is an frugal number, since it uses more digits than its factorization.

243228015648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 243228015648 in words is "two hundred forty-three billion, two hundred twenty-eight million, fifteen thousand, six hundred forty-eight".