243130505552 has 40 divisors (see below), whose sum is σ = 516021889152. Its totient is φ = 110055283200.

The previous prime is 243130505549. The next prime is 243130505587. The reversal of 243130505552 is 255505031342.

It is a super-2 number, since 2×243130505552² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2823608 + ... + 2908439.

Almost surely, 2^243130505552 is an apocalyptic number.

243130505552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

243130505552 is an abundant number, since it is smaller than the sum of its proper divisors (272891383600).

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

243130505552 is a wasteful number, since it uses less digits than its factorization.

243130505552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732307 (or 5732301 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 243130505552 its reverse (255505031342), we get a palindrome (498635536894).

The spelling of 243130505552 in words is "two hundred forty-three billion, one hundred thirty million, five hundred five thousand, five hundred fifty-two".