13530266203531 has 16 divisors (see below), whose sum is σ = 16874746652160. Its totient is φ = 10539412490880.

The previous prime is 13530266203499. The next prime is 13530266203589.

13530266203531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13530266203531 - 2⁵ = 13530266203499 is a prime.

It is a super-2 number, since 2×13530266203531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530266200531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30210286 + ... + 30654883.

It is an arithmetic number, because the mean of its divisors is an integer number (1054671665760).

Almost surely, 2^{13530266203531} is an apocalyptic number.

13530266203531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13530266203531 is a deficient number, since it is larger than the sum of its proper divisors (3344480448629).

13530266203531 is a wasteful number, since it uses less digits than its factorization.

13530266203531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60868074.

The product of its (nonzero) digits is 291600, while the sum is 40.

It can be divided in two parts, 1353026 and 6203531, that added together give a palindrome (7556557).

The spelling of 13530266203531 in words is "thirteen trillion, five hundred thirty billion, two hundred sixty-six million, two hundred three thousand, five hundred thirty-one".