243061558272 has 176 divisors, whose sum is σ = 775203485280. Its totient is φ = 74788061184.

The previous prime is 243061558253. The next prime is 243061558339. The reversal of 243061558272 is 272855160342.

243061558272 is a `hidden beast` number, since 2 + 4 + 3 + 0 + 61 + 5 + 582 + 7 + 2 = 666.

It is a super-2 number, since 2×243061558272² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21298 + ... + 697550.

Almost surely, 2^243061558272 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 243061558272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387601742640).

243061558272 is an abundant number, since it is smaller than the sum of its proper divisors (532141927008).

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

243061558272 is a wasteful number, since it uses less digits than its factorization.

243061558272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676295 (or 676271 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 243061558272 in words is "two hundred forty-three billion, sixty-one million, five hundred fifty-eight thousand, two hundred seventy-two".