13531021169 has 2 divisors, whose sum is σ = 13531021170. Its totient is φ = 13531021168.

The previous prime is 13531021151. The next prime is 13531021183. The reversal of 13531021169 is 96112013531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12850489600 + 680531569 = 113360^2 + 26087^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531021169 - 2²⁰ = 13529972593 is a prime.

It is a super-2 number, since 2×13531021169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13531021139) by changing a digit.

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 as a sum of consecutive naturals, namely, 6765510584 + 6765510585.

It is an arithmetic number, because the mean of its divisors is an integer number (6765510585).

Almost surely, 2^13531021169 is an apocalyptic number.

It is an amenable number.

13531021169 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531021169 is an equidigital number, since it uses as much as digits as its factorization.

13531021169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The spelling of 13531021169 in words is "thirteen billion, five hundred thirty-one million, twenty-one thousand, one hundred sixty-nine".