521442333012232 has 8 divisors (see below), whose sum is σ = 977704374397950. Its totient is φ = 260721166506112.

The previous prime is 521442333012217. The next prime is 521442333012239. The reversal of 521442333012232 is 232210333244125.

It can be written as a sum of positive squares in only one way, i.e., 284867356584196 + 236574976428036 = 16878014^2 + 15380994^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 521442333012191 and 521442333012200.

It is not an unprimeable number, because it can be changed into a prime (521442333012239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32590145813257 + ... + 32590145813272.

Almost surely, 2^{521442333012232} is an apocalyptic number.

It is an amenable number.

521442333012232 is a deficient number, since it is larger than the sum of its proper divisors (456262041385718).

521442333012232 is a wasteful number, since it uses less digits than its factorization.

521442333012232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65180291626535 (or 65180291626531 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 521442333012232 its reverse (232210333244125), we get a palindrome (753652666256357).

The spelling of 521442333012232 in words is "five hundred twenty-one trillion, four hundred forty-two billion, three hundred thirty-three million, twelve thousand, two hundred thirty-two".