13521506506 has 8 divisors (see below), whose sum is σ = 20315675520. Its totient is φ = 6749614668.

The previous prime is 13521506483. The next prime is 13521506513. The reversal of 13521506506 is 60560512531.

13521506506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13521506506² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5567776 + ... + 5570203.

It is an arithmetic number, because the mean of its divisors is an integer number (2539459440).

Almost surely, 2^13521506506 is an apocalyptic number.

13521506506 is a deficient number, since it is larger than the sum of its proper divisors (6794169014).

13521506506 is a wasteful number, since it uses less digits than its factorization.

13521506506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11138588.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 13521506506 in words is "thirteen billion, five hundred twenty-one million, five hundred six thousand, five hundred six".