13520245307 has 2 divisors, whose sum is σ = 13520245308. Its totient is φ = 13520245306.

The previous prime is 13520245267. The next prime is 13520245313. The reversal of 13520245307 is 70354202531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13520245307 - 2⁸ = 13520245051 is a prime.

It is a super-2 number, since 2×13520245307² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13520245507) 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, 6760122653 + 6760122654.

It is an arithmetic number, because the mean of its divisors is an integer number (6760122654).

Almost surely, 2^13520245307 is an apocalyptic number.

13520245307 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520245307 is an equidigital number, since it uses as much as digits as its factorization.

13520245307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

Adding to 13520245307 its reverse (70354202531), we get a palindrome (83874447838).

The spelling of 13520245307 in words is "thirteen billion, five hundred twenty million, two hundred forty-five thousand, three hundred seven".