13533431332544 has 56 divisors (see below), whose sum is σ = 28511366830848. Its totient is φ = 6351599185920.

The previous prime is 13533431332511. The next prime is 13533431332559. The reversal of 13533431332544 is 44523313433531.

It is a junction number, because it is equal to n+sod(n) for n = 13533431332495 and 13533431332504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16268192 + ... + 17079839.

Almost surely, 2^{13533431332544} is an apocalyptic number.

It is an amenable number.

13533431332544 is an abundant number, since it is smaller than the sum of its proper divisors (14977935498304).

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

13533431332544 is a wasteful number, since it uses less digits than its factorization.

13533431332544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33348433 (or 33348423 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 44.

The spelling of 13533431332544 in words is "thirteen trillion, five hundred thirty-three billion, four hundred thirty-one million, three hundred thirty-two thousand, five hundred forty-four".