243522645552 has 120 divisors (see below), whose sum is σ = 686460953568. Its totient is φ = 80587008000.

The previous prime is 243522645481. The next prime is 243522645557. The reversal of 243522645552 is 255546225342.

It is a happy number.

243522645552 is a `hidden beast` number, since 2 + 4 + 3 + 52 + 2 + 6 + 45 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 243522645498 and 243522645507.

It is not an unprimeable number, because it can be changed into a prime (243522645557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56988888 + ... + 56993160.

Almost surely, 2^243522645552 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 243522645552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343230476784).

243522645552 is an abundant number, since it is smaller than the sum of its proper divisors (442938308016).

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

243522645552 is a wasteful number, since it uses less digits than its factorization.

243522645552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059 (or 7050 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 45.

The spelling of 243522645552 in words is "two hundred forty-three billion, five hundred twenty-two million, six hundred forty-five thousand, five hundred fifty-two".