521542414512432 has 30 divisors (see below), whose sum is σ = 1459594396170612. Its totient is φ = 173847471504096.

The previous prime is 521542414512377. The next prime is 521542414512433. The reversal of 521542414512432 is 234215414245125.

It is a happy number.

521542414512432 is a `hidden beast` number, since 5 + 2 + 1 + 54 + 2 + 41 + 4 + 512 + 43 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (521542414512433) 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 in 5 ways as a sum of consecutive naturals, for example, 1810911161358 + ... + 1810911161645.

Almost surely, 2^{521542414512432} is an apocalyptic number.

It is an amenable number.

521542414512432 is an abundant number, since it is smaller than the sum of its proper divisors (938051981658180).

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

521542414512432 is a wasteful number, since it uses less digits than its factorization.

521542414512432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621822323017 (or 3621822323008 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 45.

Adding to 521542414512432 its reverse (234215414245125), we get a palindrome (755757828757557).

The spelling of 521542414512432 in words is "five hundred twenty-one trillion, five hundred forty-two billion, four hundred fourteen million, five hundred twelve thousand, four hundred thirty-two".