13520223569 has 2 divisors, whose sum is σ = 13520223570. Its totient is φ = 13520223568.

The previous prime is 13520223553. The next prime is 13520223581. The reversal of 13520223569 is 96532202531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10804563025 + 2715660544 = 103945^2 + 52112^2 .

It is a cyclic number.

It is not a de Polignac number, because 13520223569 - 2⁴ = 13520223553 is a prime.

It is a super-2 number, since 2×13520223569² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13520223599) 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, 6760111784 + 6760111785.

It is an arithmetic number, because the mean of its divisors is an integer number (6760111785).

Almost surely, 2^13520223569 is an apocalyptic number.

It is an amenable number.

13520223569 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520223569 is an equidigital number, since it uses as much as digits as its factorization.

13520223569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 13520223569 in words is "thirteen billion, five hundred twenty million, two hundred twenty-three thousand, five hundred sixty-nine".