13521425544 has 96 divisors (see below), whose sum is σ = 42052327200. Its totient is φ = 3881744640.

The previous prime is 13521425543. The next prime is 13521425557. The reversal of 13521425544 is 44552412531.

13521425544 is a `hidden beast` number, since 1 + 3 + 521 + 42 + 55 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13521425499 and 13521425508.

It is not an unprimeable number, because it can be changed into a prime (13521425543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434229 + ... + 464324.

It is an arithmetic number, because the mean of its divisors is an integer number (438045075).

Almost surely, 2^13521425544 is an apocalyptic number.

It is an amenable number.

13521425544 is an abundant number, since it is smaller than the sum of its proper divisors (28530901656).

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

13521425544 is a wasteful number, since it uses less digits than its factorization.

13521425544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898595 (or 898588 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The spelling of 13521425544 in words is "thirteen billion, five hundred twenty-one million, four hundred twenty-five thousand, five hundred forty-four".