13521405435052 has 12 divisors (see below), whose sum is σ = 23663677917376. Its totient is φ = 6760354601520.

The previous prime is 13521405435007. The next prime is 13521405435061. The reversal of 13521405435052 is 25053450412531.

It is a junction number, because it is equal to n+sod(n) for n = 13521405434996 and 13521405435014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86941599 + ... + 87096982.

Almost surely, 2^{13521405435052} is an apocalyptic number.

It is an amenable number.

13521405435052 is a deficient number, since it is larger than the sum of its proper divisors (10142272482324).

13521405435052 is a wasteful number, since it uses less digits than its factorization.

13521405435052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174058008 (or 174058006 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 13521405435052 its reverse (25053450412531), we get a palindrome (38574855847583).

The spelling of 13521405435052 in words is "thirteen trillion, five hundred twenty-one billion, four hundred five million, four hundred thirty-five thousand, fifty-two".