243220230544 has 10 divisors (see below), whose sum is σ = 471239196710. Its totient is φ = 121610115264.

The previous prime is 243220230523. The next prime is 243220230571. The reversal of 243220230544 is 445032022342.

It can be written as a sum of positive squares in only one way, i.e., 216585990544 + 26634240000 = 465388^2 + 163200^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7600632189 + ... + 7600632220.

It is an arithmetic number, because the mean of its divisors is an integer number (47123919671).

Almost surely, 2^243220230544 is an apocalyptic number.

It is an amenable number.

243220230544 is a deficient number, since it is larger than the sum of its proper divisors (228018966166).

243220230544 is a wasteful number, since it uses less digits than its factorization.

243220230544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15201264417 (or 15201264411 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 31.

Adding to 243220230544 its reverse (445032022342), we get a palindrome (688252252886).

The spelling of 243220230544 in words is "two hundred forty-three billion, two hundred twenty million, two hundred thirty thousand, five hundred forty-four".