13531202448 has 80 divisors (see below), whose sum is σ = 36137270400. Its totient is φ = 4359951360.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202448 is 84420213531.

It is a super-2 number, since 2×13531202448² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13531202449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182973 + ... + 246051.

It is an arithmetic number, because the mean of its divisors is an integer number (451715880).

Almost surely, 2^13531202448 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 13531202448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18068635200).

13531202448 is an abundant number, since it is smaller than the sum of its proper divisors (22606067952).

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

13531202448 is a wasteful number, since it uses less digits than its factorization.

13531202448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63240 (or 63234 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 13531202448 its reverse (84420213531), we get a palindrome (97951415979).

The spelling of 13531202448 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred forty-eight".