13531121452 has 6 divisors (see below), whose sum is σ = 23679462548. Its totient is φ = 6765560724.

The previous prime is 13531121413. The next prime is 13531121503. The reversal of 13531121452 is 25412113531.

It is a self number, because there is not a number n which added to its sum of digits gives 13531121452.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1691390178 + ... + 1691390185.

Almost surely, 2^13531121452 is an apocalyptic number.

It is an amenable number.

13531121452 is a deficient number, since it is larger than the sum of its proper divisors (10148341096).

13531121452 is a wasteful number, since it uses less digits than its factorization.

13531121452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382780367 (or 3382780365 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

Adding to 13531121452 its reverse (25412113531), we get a palindrome (38943234983).

The spelling of 13531121452 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-one thousand, four hundred fifty-two".