13456821354804 has 72 divisors (see below), whose sum is σ = 35871622244640. Its totient is φ = 4241753635392.

The previous prime is 13456821354629. The next prime is 13456821354811. The reversal of 13456821354804 is 40845312865431.

13456821354804 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 6 + 82 + 13 + 548 + 0 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17609139 + ... + 18357434.

It is an arithmetic number, because the mean of its divisors is an integer number (498216975620).

Almost surely, 2^{13456821354804} is an apocalyptic number.

It is an amenable number.

13456821354804 is an abundant number, since it is smaller than the sum of its proper divisors (22414800889836).

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

13456821354804 is a wasteful number, since it uses less digits than its factorization.

13456821354804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35967149 (or 35967144 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 54.

The spelling of 13456821354804 in words is "thirteen trillion, four hundred fifty-six billion, eight hundred twenty-one million, three hundred fifty-four thousand, eight hundred four".