13531153442 has 12 divisors (see below), whose sum is σ = 21020754066. Its totient is φ = 6532280160.

The previous prime is 13531153439. The next prime is 13531153477. The reversal of 13531153442 is 24435113531.

It can be written as a sum of positive squares in 3 ways, for example, as 8498811721 + 5032341721 = 92189^2 + 70939^2 .

It is a super-2 number, since 2×13531153442² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13531153399 and 13531153408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4020659 + ... + 4024022.

Almost surely, 2^13531153442 is an apocalyptic number.

13531153442 is a deficient number, since it is larger than the sum of its proper divisors (7489600624).

13531153442 is an equidigital number, since it uses as much as digits as its factorization.

13531153442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044741 (or 8044712 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

Adding to 13531153442 its reverse (24435113531), we get a palindrome (37966266973).

The spelling of 13531153442 in words is "thirteen billion, five hundred thirty-one million, one hundred fifty-three thousand, four hundred forty-two".