13506521304 has 16 divisors (see below), whose sum is σ = 33766303320. Its totient is φ = 4502173760.

The previous prime is 13506521299. The next prime is 13506521377. The reversal of 13506521304 is 40312560531.

It is a super-2 number, since 2×13506521304² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281385837 + ... + 281385884.

Almost surely, 2^13506521304 is an apocalyptic number.

It is an amenable number.

13506521304 is an abundant number, since it is smaller than the sum of its proper divisors (20259782016).

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

13506521304 is a wasteful number, since it uses less digits than its factorization.

13506521304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562771730 (or 562771726 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 13506521304 in words is "thirteen billion, five hundred six million, five hundred twenty-one thousand, three hundred four".