13521045356 has 96 divisors (see below), whose sum is σ = 29481040512. Its totient is φ = 5283532800.

The previous prime is 13521045337. The next prime is 13521045371. The reversal of 13521045356 is 65354012531.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11257556 + ... + 11258756.

It is an arithmetic number, because the mean of its divisors is an integer number (307094172).

Almost surely, 2^13521045356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13521045356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14740520256).

13521045356 is an abundant number, since it is smaller than the sum of its proper divisors (15959995156).

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

13521045356 is a wasteful number, since it uses less digits than its factorization.

13521045356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 13521045356 its reverse (65354012531), we get a palindrome (78875057887).

The spelling of 13521045356 in words is "thirteen billion, five hundred twenty-one million, forty-five thousand, three hundred fifty-six".